There's still plenty of good music out there.
I also find that my hearing aids aren't great for music due to how much they change timbre from boosting the high end, so I use regular ear buds instead.
I mentioned different eq curves down thread. I don't have a lot of technical data at hand, but older radios from the vacuum tube era where they had response over 10 khz.
A good one, play that a respectable volume in a room, sounds pretty great!
What I'm kind of hinting at here is there maybe Equalization curves that can satisfy our need for that bright open sense that is missing when the higher frequencies are also missing.
Maybe the 4khz range is what was emphasized on older audio gear. I am thinking about the great overall impact that gear delivered is intriguing to me.
Another thought I had is how filters differ from an organic lack of response. Filtering wide band audio introduces artifacts. Those can be heard on AM every day in the US in the stations using brick wall type 5Khz filters.
A wideband signal run through something with low response is different!
And the cutoff matters.
No matter what the gear, a 5khz cutoff is crappy. 8khz can be good, and 10 can be hard for many to tell given good gear and quality source audio.
Once, I was able to listen to a great jazz recording on a older tube stereo. 50's era gear.
Playing vinyl on it was a terrible experience for both the listener and the vinyl. A recording done on tape was kind of amazing! The device was mone, pretty sure was a Zenith, and it had a cool baffle system on the speaker. One "tuned it for the room" by pulling a knob in and out. That shaped the low and mid range.
Was better than I would expect for that overall bandwidth.