First off, I apologize for the asking and deleting my previous question about this. I thought it was more of a dupe of this question that I asked a while back. I'll be more central to the actual issue this time.
I hired a company to hang drywall on my ceiling and then mud/finish all surfaces so I could paint. Included are pics I took of a few of their more excessively-sunken screws. I said to one of the guys, "Not to criticize your work, but aren't you driving the screw too deep?" He said, "The head of the screw can't be flush to the drywall surface. You have to countersink it like this so that you can mud over it." I agree with that statement, but what I've learned is that you're supposed to dimple the screw in, not drive it through the paper. In these pics, it definitely looks like the heads broke the paper. Is this a typical installation by professional drywallers working for a company with a solid A rating backed by lots of reviews on Angie's list?