Personally I think not having karma limits is nice currently! I understand why they were used but grinding karma as a lurker on reddit was frustrating.
Among the large instances, sh.itjust.works, sopuli.xyz, feddit.de, beehaw.org, lemmy.one, lemmy.ca, and midwest.social all have lemmygrad blocked. Beehaw seems to already have Hexbear blocked too - very ahead of the curve, gotta respect that.
Meanwhile, lemmy.world, lemmy.blahaj.zone, and of course lemmy.ml do not have lemmygrad blocked.
I’m not sure where you can read about the blocking. If you ask the liberals, they’ll probably say something about genocides. If you ask lemmygrad, they’ll probably just say cause they’re libs. Anyway, there’s not that many users. If someone is annoying you then just block them.