When i have flown checkouts with pilots with ANR mixed with my Dave Clarks its really annoying as they seem to use cheap microphones feeding loads of aircraft noise into the intercom and my headset.
After 30 years flying and twenty with DC's averaging 600 hrs a year in GA theres been little hearing loss other than that associated with age.
Try hanging around a forge for 5 years with high frequency generators and electric motors, then try to sleep at night, thats what i call hearing damage.
Whats more tiring is the constant babble on the radio.