Is it hypocritical for a staunch defender of pit bulls to call another breed "inherently mean"?

A fb friend consistently defends pit bulls, saying they’re only as mean as their owners make them.
I shared the video of the cat saving that kid from a dog attack, and she made a comment that if it had been a pit they would have mentioned the breed in the article. I did a little research and found that it was a lab/chow mix.
She responded with “Well that explains it. Chows are inherently mean.”
Kind of left me scratching my head.

P.S. I don’t care for pits or chows, either one. Every other breed I take them as individually as they come.