Maybe it depends on the political regimes the JWs confront, plus their own built-in paranoia. It's a self-fulfilling prophecy, esp. if you're born-in.
I don't think all people hate the JWs; it's just that they (the JWs) believe it; so, if you point out failed prophecies or issues like pedophilia, they assume it's hate speech or hate mail, when all you're trying to do is tell them the real truth.
It's a pisser. No. Not everybody hates them; a lot of us feel sorry for them, even though we're mad about how we've been treated by them. Anger isn't the same as hatred.
And information isn't hate mail. But people with a persecution complex will call education about their cult "propaganda" or hate.
Edited to say: I think that's the reason I've just about given up on my JW family. I feel like a tear.
Anyway, I was brought up with the same persecution complex issues, too. It simply translated into intense social anxiety and major trust issues as an adult, even though I don't buy any of the Craptower ideas. I still struggle to feel safe with others period. No, I don't believe everybody hates me; it just feels that way sometimes.