Okay bro, if you want to get technical and bump everyone's notifications: Instagram as a rule does not allow nudity. Have accounts and photographers posted it? Yes, and some of it remains. But any major account will have those posts removed and action taken on their account (if your photographers you mention are still doing it, constantly, they're definitely having their accounts removed from the recommendations algorithm at a minimum). So Maisie Williams, famous actress, nor her friends who's accounts wouldn't be hounded posting that kind of imagery, will never do it. It was moot point to get that pedantic.