But he didn't say that. He said the characters are "deformed loli only crap" unless that's what he calls children. Seems to be a rather strong opinion presented as fact for a show he's never seen. Last I checked they weren't even loli.
No they definitely aren't lolis. They are high school age at least. Not to mention they act nothing like children, because that is a really cruel world this takes place in, and childish innocence is quickly squashed.
They do kinda have some wide ass angular faces.
Thats just Ume's style. Even adults look that way in her shows.