I think when our good Lord reads this thread, He shakes His head in exasperation. After all the words of the prophets, after the Gospels and all the Church teachings, it still seems that what is most important to God: the state of our hearts before Him, is being given second place to external appearances.
Of
course the state of the heart is important, and when receiving the Eucharist one is to have the correct inner disposition. So now, assuming this to be true, some people are concerned also about the outward expression of reverence. Since the former is already held to be true, discussing the latter does not place the former in “second place”.
It is presumably universally accepted among practicing catholics that the state of the heart, a proper inner disposition, is necessary when receiving the Eucharist. The question is, “how can we do better?” Thus, taking the matter a step further and discussing the outward expression of reverence does not place the outward before the inward. To make this accusation is a fallacy.
Sure posture can reflect the heart, but not always and it is superficial to judge reverence by what we see on the outside.
The matter is not one of judging, but rather enforcing a practice more likely to instill inner reverence.
I may be looking in the wrong places, but I’ve yet to see a thread this long examining the state of our consciences when we receive the Lord’s body and blood.
There are many resources, both online and in print (as well as directly from priests) about how to examine one’s conscience. The necessity of being clean of mortal sin before receiving Communion is a sure teaching of the Church and does not require discussion. This is why long threads about these topics are difficult to find.
Ultimately, that is what is important to God and all else is just trappings.
On the contrary, after seeking the appropriate inner disposition, presenting the proper outward appearance is edifying to those around us, and in turn is likely to aid us in maintaining the appropriate state of the heart.
The important thing is to view the outward and inward as complements, each of the other, rather than as irreconcilable enemies between which we must choose one at the expense of the other. The latter, false view is exemplified by your unfortunate wording in casting external reverence as mere “trappings”.