Al, I've looked at a lot of pieces and posts on this forum. I've given attaboys many times, when I really didn't care for the overall form. But I think there are times when criticism is warranted, and times when it isn't. Sometimes folks just need an encouragement to keep on turning, and if they like a piece enough to post a pic of it, who am I to say what is or isn't "right" about it.....
If it's the poster's first piece of that type or style, I believe that it isn't proper to criticize it, when they haven't asked for a critique, and if it's a good try for the first piece, it deserves praise, of sorts, especially when we don't know the person doing the post, and when I can remember what my "firsts" (and some of my "lasts") looked like, and this piece is better.
Also, some of us, like myself, don't feel qualified to do a good critique of someone's work.
Coaching, I agree with, because it might help someone find out what they do or don't like about their own piece.
Just my opinion...