Now, doesn't that feel better?
#1 I agree that when there is tape there is usually something going on that's wrong. Too many wires in too small a wirenut, too much insulation stripped off, wires too short, or my personal favorite - Twisted the Wrong Way!
#2 Don't bite me here - I don't see a violation in wrapping a receptacle with tape, I do it myself. I feel that it makes things just a little safer for the remodeler that may have to pull it out, or the wallpaperer, etc. And it cuts down on the likelyhood of contact with a bare ground when Romex is used or the Box supports (We call them Madison Clips) in old work applications. You are right, though, if things are done correctly, and not touched by anyone afterwards - there is no need, But I would rather be safe than sorry especially in Residential work where a cover might break or be left off and a child might put their finger in the box. That's just one of my 'things'