My Q is now deleting their entire friend circle off facebook

Several long time friends in my partner's friend group reached out concerned about their mental health. They are now all getting unfollowed and removed from my partner's Facebook profile. My partner says that they are all brainwashed and used terms like "rainbow" and "facists". It's so hard to watch this unfold. If and when I leave, my partner is going to be friendless except for their strange online troll group on X. Just really sad, I miss the person I fell in love with