Yesterday I did 200kg for 3 which even at my "peak" 5+ years ago I wouldn't have been able to do.
Just means 5 years ago you were being a pussy with your lifting

You said it, not me

other than the fact I've been working harder in the gym than before
You could slow down your peak by going on TRT if you qualify for it
It's easy to get TRT tbh, there is an entire part of TRT that is "optimisation" instead of therapeutic treatment of very low T levels. The issue I have is that it's a) never going to be as healthy as being natty (unless your T levels are RIP) and b) it's a life long commitment. I may revisit it in another 5 years when I turn 40.