I can't believe I didn't realise this sooner but this writing style is literally a aus99 user called hayabi who use to stalk Christmas lol.
Fuck me I'm so good at identifying people by their writing style.
Now it’s starting to make sense. He mentioned being doxxed using another account before and claimed he took legal action. A few days ago someone (re?)posted an instagram they claimed was his and it would line up somewhat with that user name