Honestly, owning up to it being a selfish decision deserves some respect. I'm a big proponent of free expression and avoiding censorship, but I took a gander at the kinda stuff they got over there and...
It's not even the views they hold that's my main problem. It's really that they're just so needlessly rude and aggressive, and as you pointed out, they seem to be a lot more censorship happy than here anyway. I would be more sympathetic to them if they were less censorship happy themselves, and if they were less mean.
I do want to stress that I hope you keep the number of blocked instances to a minimum, since I feel that it would be better if the Lemmy software had better tools for users to control what they block for themselves better, and also maybe just having "default" blocklists that users can disable, to keep the new-user experience nice, but yeah for that particular instance, I can't be too mad about it.
That'd be cool, but just a simple reminder in case not, that you can simply make an account on that instance. There's no limit to what instances you're allowed to have accounts on or anything like that, so you can always do that.
Still for cohesion I get wanting it all together.