Probably. I don't know the full story, beyond vampires trying to kill Aunt Lei--er, his mom. I imagine that, plus a healthy dose of Salvatore family prejudice, did the trick.

[Tyler's not the guy to ask, and he knows it. Every time he tries to get the picture, Mason or someone else changes the subject.] He's not the kind of guy to blindly hate a whole species, at least not normally.