Made the switch from lemmy.world the other day due to this. Not necessarily because of who they defederated/blocked, but because this happens with little/no consultation or communication with the user base. The frequency of it became frustrating; who knows what other community/instance will be blocked on a whim next?
I appreciate that the LW admins do this as a hobby in their free time, but things like this could be approached in a better way, or at the very least with better communication. I found out about this via a post in /c/mildlyinfuriating, which in itself was mildly infuriating lol.
Migrated to this instance, and I can choose via Connect which instances or communities I want to see. Should have done this sooner.