Oh no! Not concerns! If only there was an open source, decentralized platform that had an active community that could address said concerns if they become an issue.
Tbh I would rather browse flickr or dpreview when that was a thing than to jump on instagram. Never been on it - but seeing the stuff an ex would post and others I always found it offputting. I am sure it had good pictures on it at one point, but that was so long ago I never had an opportunity to experience it. I assume it was good before facebook bought them.