How do you know?

It could have been a good reason for them. Just because it wasn't for you means nothing.

It's his or her prerogative to block anyone he or she doesn't care to see. I have blocked a few people who posted either obnoxious or disgusting comments that I just didn't care to read. They weren't directed at me, but I am happier not having to see them. It makes my experience here more pleasurable.

"x" is a dick! You'll find someone better!

If you were blocked, there had to be a reason. Maybe it wasn't right, but there was at least one

That's called winning the self selection lottery. I may make a crude joke here or there if I get blocked I realize that isn't the sort of person I want around me. For example: I was on a dating site and I always read the bio before I message. Hers said talk about eating crab is a guaranteed way to get a response. So I asked " Where's the best place in town to eat crab? (Don't say between your legs)" she responded "wow" -->>blocked by user. Did me a favor.

Were you making fun of their name?

I get blocked all the time.
I don't care why.
Whatever reason the person has, it's their's. I don't have to agree with it.
I don't even want to know what it is.

Bollocks to 'em

So block "x" back.