I gave up in the mid 90’s after the third collarbone break, the quack said if I broke them again I risked severing the brachial nerve.
I took up climbing and then kite buggy racing (went to the World Champs representing England in 2010 :D). When the second child arrived I couldn’t fit all the kite gear and my family in the car so went back to MTBing.
So far, no further broken collar bones, pretty convinced the modern full suss is accountable, my bike has got me out of deep trouble on a couple of occasions when a 90’s hard tail would have killed me.