On the specific issues I’ve heard mentioned:
If this is really a list of grievances, then it really shows that “trads” either have a very poor liturgical theology or really only care about aesthetics and not about the theology. So, for a generic list of things, here’s some easy replies:
*]The Eucharistic prayer of the OF is deficient.
What does “deficient” mean? What they really want to say is that “they’re not as pretty”. Which is true, EP1 is a lot prettier, but that doesn’t make other EPs deficient. According to the CCC (cf. 1352ff), the EP has 5 requirements: 1. Preface 2. Epiclesis 3. Institutional Narrative 4. Anamnesis 5. Intercessions
All EP that are approved for use in the OF have these 5 requirements. To say that any of them are deficient is just bad theology.
*]For the priest to pray toward the people in the OF is to erase the distinction between priest and laity, who should be marked as offering distinctly separate sacrifices.
This is a false dichotomy bordering on heresy.
Instead, read what the CCC says: (1368) “In the Eucharist, the sacrifice of Christ becomes also the sacrifice of the members of his body. The lives of the faithful, their praise, suffering, prayer, and works, are united with those of Christ and with his total offering, and so acquire a new value”.
Also, the reason for the existence of the ministerial priesthood is to build up and support the royal priesthood of all the baptized. To place a wedge between the two is just wrong.
*]Removing the tabernacle from the central Altar diminishes the centrality of the Eucharist in the OF.
If this is actually an opinion, it shows a lack of understanding of what is going on during the Eucharistic sacrifice.
During the Mass, the primary focus is the ALTAR.
Not the tabernacle. The altar is where Christ is being made present NOW. The Eucharist is always central in every Mass regardless of where the tabernacle is because
Jesus is being made present.
*]It is less worthwhile for laity to simply follow along with the priest’s prayer, as in the vernacular OF; it is more spiritually efficacious to offer a separate Eucharistic prayer specifically intended for Mass.
Why? Why are we placing a wedge between the Mass and the sacrifices of the people of God? The Eucharist is a gift (a grace) from God
for us, to build us up and give us strength. You cannot simply place the Mass in a vacuum apart from the people who are there to celebrate it.
*]Piano and guitar are insufficiently reverential instruments for liturgical music.
[citation needed] (for those who claim these things)
The truth about music is that any music which is not inherently evil can be used for sacred music. To try to artificially restrict music is against the idea of liturgical inculturation, and it really smacks of a musical classicalism.
Piano and guitar can be incorporated into the liturgy. So can drums and dancing (which have always been part of worship in African or Aboriginal cultures for example). It a simple statement: Just because Rome (the city) didn’t use it doesn’t mean others didn’t, and it doesn’t mean that others
can’t.
*]The melodies and musical arrangements of traditional Tridentine music are an essential part of proper worship.

As defined by who? Traditionalists themselves? If anyone is using this argument, it basically comes down to a “because I said so” answer, and so it’s not an argument at all but an assertion.
*]The loss of reverential, traditional liturgy is a large contributor to people leaving the Church.
This is a statement that I’ve seen floating around for years, without ever seeing an actual scientific study to back it up. No statistics (well analyzed and corrected against external factors), no major journal publications.
Nor any acknowledgement that the external cultural factors of the 60s/70s/80s could have actually played a part. As if the only thing that Catholics in the world thought about during that period was liturgical form. It’s just a poorly thought out assertion that seems to have this pre-assumption that Catholics are immune from external cultural factors (as if that has ever been the case in the 2000 year history of Christianity).
*]The replacement of sermons with homilies has eroded the moral sense of the laity.
And yet requiring priests to actually focus on the Scriptures in their homilies is an ancient tradition (St. Augustine anyone?). It also connects the Liturgy of the Word more to the Liturgy of the Eucharist, where in both the Word or the species are taken, blessed, broken, and shared. If the Word is to be alive for us in our time (as it is in every age of the world), then it needs to be explained and broken open for the people. Otherwise the Words becomes dead words on a page that say nothing to our time.
This is really a homiletics question. And we know, the homilies in Catholic churches are not very good in many cases. We need to teach our priests and seminarians better homiletics. A good homilist can incorporate more teachings into a good explanation of the scripture text that was read without making it sound like your ramming something down somebody’s throat (most people do not in fact appreciate that, and good pastoral action means that you are doing the best you can to help people encounter Jesus, not turn them off from Him).
These were just a few quick answers I thought up that some here might want to contemplate over. A few of these I’ve head for years, so I just wanted to give some answers on why many of them aren’t really good reasons at all.