Nintendo fans criticize it now, but when you have it it's addicting and very satisfying. Also what's wrong with bragging? Don't you tell your friends that you beat a game hardest difficulty or that you beat a certain boss without dying once and stuff like that?
I don't see why anyone would be so against it. You don't like it don't collect them ignore them. I personally like to look at the trophy list after finishing a game to see what I can unlock.







