I just looked at the list. The domain names alone paint a picture of far right/red pill/sketchy pedo sites... Nothing too surprising. Hey, if you're into that stuff, you do you, but that block list is far, far, far from controversial

And almost all of those are not Lemmy instances. That's a Mastodon block list, and is overwhelmingly made up of Pleroma and Mastodon sites well known for shitty brhaviour.

Or did you not actually investigate the links?