Cycling and ED - any experiences?

I had a cycling buddy who spent much of his teens riding bikes, including riding in casual clothes without padded shorts at a time when hard, narrow saddles were favoured. The long term consequence was severe scarring of tissue under his perineum which was rectified through a fairly uncomfortable procedure and recovery to remove the scar tissue in order to restore blood flow.
I’ve been riding seriously for 40+ years, fortunately the only times I suffered numbness was doing TTs on a fixed gear bike - riding the last 5 miles of a 25, I was numb from the waist down due to pulling myself onto the nose of the saddle
Folks trying to emulate pro cyclists with deep saddle to bar drops and compensate by angling the saddle up can sometimes find themselves in trouble.

I have been riding since I was 10. 25 years of bashing about, but I'm curious why it'd only come on now. Surely there'd be some signs earlier?

I'm also lucky enough that proper body geometry saddles had just appeared when I started riding!