It is terribly discouraging

! Alas, the GIRM only “encourages” silence:
45. Sacred silence also, as part of the celebration, is to be observed at the designated times…Even before the celebration itself, it is commendable that silence to be observed in the church, in the sacristy, in the vesting room, and in adjacent areas, so that all may dispose themselves to carry out the sacred action in a devout and fitting manner.
There is a parish near me that, despite years and years of “progress” (as in
progressive) and poor catechesis, the tabernacle was never removed from the head of the sanctuary. This may be due to the fact that it is an
extremely small church. Anyway, the wonderful new pastor had to contend with a noisy, disrespectful congregation. If he had made the predictably unpopular announcement that silence should be observed prior to Mass, it is doubtful that many would have complied. Instead, he enters the nave five or ten minutes prior to Mass, in full vestments, and kneels to pray in silence before the tabernacle at the edge of the sanctuary. This continues until Mass begins.
From what I have heard, his example has had a profound impact on the behavior of this parish in a very short time.