Except they are not wrong. Maybe not in the specifics but in general this is exactly how AP-servers work. If you are on server A and follow someone on server B,

Except they are not wrong. Maybe not in the specifics but in general this is exactly how AP-servers work. If you are on server A and follow someone on server B, then the posts from B will be on your server and there is absolutely no way that the "original owner" of the post on server B to remove the post from A.