User level community and instance blocks will stop you from seeing posts from those places, but it does not block their users or their comments, so you’d still be able to see them around in non-blocked communities.
You can also establish a user block though too, so if their comments in unblocked communities are making your experience less than ideal, just block that user.
That’s not a terribly good user experience if a user doesn’t want to interact with or see any comments from users of a particular instance, as then it would require the user to manually block hundreds of users over a long span of time.
User level community and instance blocks will stop you from seeing posts from those places, but it does not block their users or their comments, so you’d still be able to see them around in non-blocked communities.
You can also establish a user block though too, so if their comments in unblocked communities are making your experience less than ideal, just block that user.
That’s not a terribly good user experience if a user doesn’t want to interact with or see any comments from users of a particular instance, as then it would require the user to manually block hundreds of users over a long span of time.