Personally, the Novus Ordo allows the congregation to be even more passive. I’ve regularly go to both Masses and the Novus Ordo allows my mind to wander more often than the Tridentine Mass. When everything is prayed out loud, the words can just wash over you and enter one ear and go out the other - even if you’re trying very hard to pay attention. The silence of the Tridentine Mass forces the congregation to struggle in order to get something out of it - a struggle that is more fruitful, in my opinion, because you actually have to cultivate inner prayer and meditation.
It’s so easy to sing along to an entrance hymn that you’ve heard hundreds of times while your mind is thinking about laundry. It requires much more prayerful focus and imagination to hear a Latin introit, translate it in your head and meditate on its meaning and relevance to the theme of the day.
In the Tridentine Mass, there are no intercessory litanies so anyone wishing to heap their worries and concerns and petitions on the heavenly altar are forced to personally call out to God during the Kyrie, which was originally an intercessory Litany of which only the congregational responses now remain. Just like you simultaneously pray the Hail Mary and meditate on the Mystery at hand during a Rosary, we are forced to sing along with the Kyrie while our minds and hearts are lifted up in personal petition to our Lord. In the Novus Ordo Mass, the Kyrie becomes a three-liner that most Catholics of my generation hardly take notice of. There is no deep aching of the heart calling out to the Lord to shower mercy upon us while we think about our sick loved ones, our dead relatives, our unemployment, our wayward child, our abusive parents, our addictions, our constant sins, our inadequacy, our brokenness, etc.
Most of these points can be applied to pretty much the rest of the Mass, with the Introit representing all the propers and the Kyrie representing the rest of the ordinary. The Latin of the propers forces us to prepare for Mass beforehand by going through the readings, translating them or reading the translations. It forces us to struggle with it beforehand and during the Mass while it is being chanted. The Latin of the ordinary is very simple, easily memorised and we can chant it along with the choir while we ourselves offer up our own personal prayers. Who wants to be singing along to a Gloria sung like a cheesy Sesame Street song? Wouldn’t you be rather reflecting on all the blessings that God has bestowed upon you? Wouldn’t you rather be bowing at all the appropriate moments while thanking God for your children, your family, your loved ones, your job, your education, the country you were born in, the food you have on your table, the miracles he’s worked in your life, the joys that you experience? Same with the Creed! Do you want to say it really quickly so that the words rush by you or do you want to hear it chanted and sing along? These are the words that the 318 Fathers of the Nicene Council hammered out in order to destroy the heresies of their time! When it’s sung, it’s slower - giving you time to meditate on the deep theology behind the words, giving you time to pray to God to destroy idolatry and heresy in the world, to destroy idolatry in your heart. In the Novus Ordo, it’s said so fast that you can hardly pray to God to free you from the idolatry of power, money, sex, prestige, fame, alcohol, drug-abuse, excessive entertainment, the ego, etc.
In addition, there are so many beautiful prayers in our Catholic tradition and even in other traditions that we can print out on the back of Holy Cards and pray silently during the quiet parts of the Mass. During the offertory and the Canon, you don’t have to be praying and hearing all the exact words of the priest - he’s the priest, not you. (Although you can memorise the prayers from a missal if you want to.) If you know where in the Mass we generally are and the nature of prayer that’s being offered (praise, petition, penance, etc.) and what’s being prayed for (the Church, the faithful departed, the intercession of the Saints, the purity of the ministers, etc.) you can pray your own favourite prayers of similar genre and subject matter - prayers that actually move you and you can offer it up in union with the prayers of the priest.
For example, there are stunning prayers from the Orthodox churches and Eastern traditions that I absolutely love. During the general moment when I’m assuming that the priest is praying for the Church and ecclesiastical authorities and all those who “foster the orthodox, Catholic and apostolic faith,” I pray this prayer taken from the Coptic liturgy and which I’ve printed out and glued onto the back back of a Holy Icon card.
*"The worship of idols, utterly uproot from the world. Satan and all his evil powers, trample and humiliate under our feet speedily. All offenses and their instigators, abolish. May all dissension of corrupt heresies cease. The enemies of Your holy Church, O Lord, as at all times, now also humiliate. Strip their vanity, show them their weakness speedily. Bring to naught their envy, their intrigues, their madness, their wickedness, and their slander which they commit against us; O Lord, bring them all to no avail, disperse their counsel, O God.
Arise, O Lord God, let all Your enemies be scattered, and let all that hate Your Holy Name flee before Your face."*
The Tridentine Mass, in my humble opinion, can offer a much more dynamic and active interior participation. Obviously, one need be familiar with its general structure - the meaning of each section that inexorably and slowly ascends to the moment of Holy Transubstantiation, a basic familiarity with the Latin of the ordinary (the Kyrie, Gloria, Credo, etc.) and the cues and hints at where in the Mass we are and what prayer the priest is on. These come with experience and can be easily remedied with a parish workshop on the Tridentine Mass.