The laity can have an opinion about the use of EMHC. They have the right to, politely, bring their concerns to the Pastor. Ultimately, it is the Pastor’s choice to use EMHC as per the guidelines set forth by the Bishop of the Diocese.
The Bishop of the Diocese is the Chief liturgist (or the person who he designates to this responsibility), ultimately, what he says goes.
I am not sure why it is so hard to comprehend that there are always things going on that the laity knows nothing about. I have enough things to worry about, the use of EMHC at Mass is, by far, not an important one. Especially considering I can’t do a thing about it.