The decentralized Instagram alternative is a great option if you want to back up your feed, focus on photo-sharing, or cut loose from Meta's empire entirely. And making the leap is surprisingly easy.
I guess at worse they would ban you. It's a closed off system though, so you can't even check whether people frequently use (obvious) fake names or not.
Edit: Small correction. You can actually see some users and their names in the Discovery tab, some with obvious non real names. I'm guessing it depends on your instance whether how much they care about it.