I used to have a pet peeve about people who would say, "that's so {whatever}" without a qualifying complementary clause. IOW, I'd be fine with "that's so funny I forgot to laugh," but it really bugged me when people would only say, "that's so funny."
So funny... why? It's a
qualifier, people!
Thankfully, these days I've got a new pet peeve, which I'd better not mention because then everybody will start doing it just to spite me. But it's something I keep hearing in movie and TV dialogue, and it's one of the main reasons why I'm going to cancel my DirecTV account pretty soon and not renew it, like,
ever. Until they stop doing it, anyway.
On Wikipedia they use templates to communicate with each other, so what do you expect, right? Standardization of common forms of expression (as opposed to specialized jargon, etc.) is an efficiency measure when your organization gets too large for its own good, but it's also something cults do. In WP's case I wouldn't read too much into it, but it's definitely annoying if you're exposed to it excessively.