Instagram Privacy

Hello, I am interested in a few things about instagram privacy. I saw one channel on the video service, I will not name it, where the owner posts instagram stories of celebrities. Mostly the stories are positive and informative, so I wonder if this is allowed. The channel is linked to well-ranked portals in the country so videos are well watched and make good profits.

Sorry for my english, i used google translate.

If you indicate the author, then everything will be fine.