It also depends, there are enlightened vegetarians who can actually manage to pull off LCHF. It's very tricky and requires a lot of macro and micronutrient tracking, but it can be done.
The problem is with the vegetarians who can't see the lighthouse through the broccoli they've hung in front of their face. (Not that broccoli isn't a fantastic food, I love it!) And then there's the ignorant, the misinformed and the deliberately evil, all working against “the cause”.
Glad to have you here, and looking forward to seeing some of your posts in #paleo!