Unfortunately that’s much more likely to be genetic.
Yep Pete Townsend, John Entwhistle and erm… well some more. But those guys did play on festival stages where, at back of the PA speakers it did recommend BIG ear defenders. I played one festival where the first note blew my HAIR forwards and rendered me effectively deaf for the gig (drum monitor in effect a sizeable full PA good enough for large clubs). For the people I work with generally we work nowhere near that length of exposure or that volume loudness. Madness in those days. BUT for all of us the levels of deafness are pretty much in line with all our mates and families in any other industry.
I’m certainly not sure about this but I suspect that a large amount of ear damage is/can be done by infections from dirty ear defenders. Doctors change their minds every ten years about what’s good for us (cigarettes used to be recommended for asthma!). They’re pretty good but real life is often much more reliable as a guide.