It’s just a profile scraper, no? I tried my own and a few of my friends profiles. They were not indexed yet and because they all have private settings you cannot see anything else besides current Display Name and current Profile Picture.
So you should tell your friends to set profile/edit/settings/privacy settings: Friend’s List -> Friend’s only. After that you create a new account and the scraper won’t be able to access their new friend list anymore.
Edit: Also why is this post written that way, I was unsure if AI generated or some attempt at a novel, or am I going crazy??