GIRM #24 “These adaptations consist for the most part in the choice of certain rites or texts, that is, of the chants, readings, prayers, explanations, and gestures which may respond better to the needs, preparation, and culture of the participants and which are entrusted to the priest celebrant., the priest must remember that he is the servant of the sacred Liturgy and that he himself is not permitted, on his own initiative, to add, to remove, or to change anything in the celebration of Mass.”
Which comes from
Sacrosanctum concilium #22
"22. 1. Regulation of the sacred liturgy depends solely on the authority of the Church, that is, on the Apostolic See and,
as laws may determine,
on the bishop.
- In virtue of power conceded by the law, the regulation of the liturgy within certain defined limits belongs also to various kinds of competent territorial bodies of bishops legitimately established.
- Therefore no other person, even if he be a priest, may add, remove, or change anything in the liturgy on his own authority."
For all you know, the Bishop may have passed down instructions regarding the implementation of this. Priests take a vow of obedience to their Bishops at their ordination.
There are parts in the Mass where the priest, within his rights, can make various changes.
I suggest when you attend this meeting to
listen first,
ask for clarificiation if necessary,
then pray to God about all this and if it is His Will that you speak up. If you do decide to speak up, I also suggest speaking to your priest privately and not at a public meeting challenge him on whether you think he is right or not. Just my two cents worth - feel free to ignore.
I too have been to a Mass where this occurred and it made me so uncomfortable I cringed inside - talk about uncomfortable! I was there for Mass, not a social get together. But others thought it was a good idea and were used to it. This was the first time I had encountered it and I was not ok with it.