One flaw in the logic of bright speakers adjusting for hearing loss is that the hearing loss is still present when listening to real sounds in the real world. That means, if a speaker's reproduction is intentionally made bright, it will no longer sound like live music. One may like a brighter sound, but it is still an artificial adjustment.
Second, is the brain is capable of doing a marvelous job of compensating for the signal its sent by the ears. I'm in my late 60s and have hearing loss above 12K along with tinnitus, yet music sounds just as wonderful to me now as when I was much younger. I hear a lot of live acoustic music and want the sound I hear at home to match that a closely as possible. I don't need a speaker to "correct" anything for me.
Second, is the brain is capable of doing a marvelous job of compensating for the signal its sent by the ears. I'm in my late 60s and have hearing loss above 12K along with tinnitus, yet music sounds just as wonderful to me now as when I was much younger. I hear a lot of live acoustic music and want the sound I hear at home to match that a closely as possible. I don't need a speaker to "correct" anything for me.