You very obviously do not understand how the blocklist works so here’s a very practical example:

ani.social is blocked by lemmy.ml.

Here is a post on lemmy.world containing comments by users from ani.social: https://lemmy.world/post/18538115

Here is that same post on lemmy.ml, which has blocked ani.social: https://lemmy.ml/post/19043133

Note the absence of any comment made by a user on ani.social. As far as users on lemmy.ml are concerned ani.social does not exist (as of 10 months ago, some existing content before then can still be viewed). I think you don’t know how ActivityPub works and calling me a conspiracy theorist won’t change that.