they usually dont give any helpful info so yeah its best to mute them
I only mute teammates when they are insanely whiny. Playing csgo makes no sense if you're gonna block everyone who says something rude to you.
They tend not to give any useful info in the first place so I mute. But it's really rare that I get seriously toxic team mates, I always try to calm them down if team mates are arguing, it works really well to tell them that we are stuck in this game until it ends so arguing doesn't help.
Oh and one thing I found was to set their voice volume really low. That way it is somehow is less annoying because they whine in a barely audible voice. :-)