Profiles and whether or not they get deleted from particular platforms

Like most people here, we've lost profiles such as FB or IG to things like suspensions, perma bans and all that jazz. Heaviliy unreulated AI more than likely plays a large part to do with it. When it comes to being perma banned, I've heard your accounts and things associated with them (i.e. status posts, photos etc.) never really gets deleted and they stay indefinitely invisible unless you somehow get yourself raised from the dead. For those who have said experienced, is that really the case or do they wiped away? Since we're all dealing with the same issue to one extent or another, them still existing but invisible would be the lesser of two evils unless and until this problem is more properly addressed.