Do your ears ring, at all? If they do, you have permanent hearing loss in that range. Hearing tests performed by audiologists don't go higher than 8KHz because they don't care if people can listen to full-range music, they care about people being able to hear the frequency range needed for speech intelligibility.
I find it doubtful for anyone to have listened to 110dB music for >30years and not having any hearing loss; the OSHA and NIOSH noise exposure charts aren't new- OSHA shows that exposure to 95dB should be limited to 4 hours and NIOSH for 1 hour @94dB.
Audiophiles want to feel that they're special and have all kinds of bizarre ideas about sound, often without any scientific or factual basis. They hang their hopes and dreams on many things that are supposed to make angels sing, clouds part and little birdies chirp, but those are just ways to get them to spend money.
However, I do agree with them on equalization and controls but only in the sense that if the controls are improperly used or if their circuits are badly designed and cause problems for the actual signal, their use should be avoided. I have had conversations with people who considered themselves to be 'audiophiles' and asked if they thought EQ wasn't used in the recording process and they always start their answers with 'Yabbut...".