congregational singing is an important part of worship. In the church I attend the hymns are selected to augment the day’s Scriptural readings. So you hear Scripture read, hymns which concur, a sermon which take words written 2000 years ago and explains what the same words mean in today’s world. It’s all part of the package called worship.
I’ve had some of the same thoughts in a few churches I have visited over the years. It’s supposed to be “praise and worship” time together not a rock concert where the group/choir shows off. Special music? Sure...maybe before the sermon, but it doesn’t need to be the whole P&W time.
Singing, sitting, standing, sleeping, speaking in tongues, and dancing in church are not things you should or shouldn't do. These are things you may do if you are moved to and don't do if you're not moved.