If you use one of the tools to migrate your account, the blocked communities are saved and come along to your new home instance.

Definitely debatable about whether those are "better". I'd prefer development resources not going to a solution for something that's barely a problem in the first place.

Didn't they hotfix that in yesterday?

There are a ton of better solutions for that

Such as?

Agreed. My only real issue I've had is it's one click to upgrade if you got the deluxe or ultimate edition. I clicked it thinking it would give a confirmation like, "You have one free battle pass upgrade due to purchasing the deluxe edition, would you like to use it now?" Either way, I don't mind paying a bit each season if I deem it worth the money.