Certainly you won't find this in my church, and I suspect that most of my non-Catholics friends here are the same. "Opinion" or preachign by the preacher are a part of the worship service, but not its totality. People go to sing songs of praise, to hear the Word read and to offer their prayers and concerns to the Lord.
Even if "opinion" is offered, it is not the main reason to attend a worship service. Worship, by praise and song is.
SD