Have you seen anyone in a music recording studio or a stage wearing Bluetooth headphones?
My point is not that everybody needs headphones for studio sessions or gigs etc. My point is simply that Bluetooth is not just better as you seem to imply.
Different technologies have different usecases, wired headphones won't die for a very long time, and there are good reasons for it.
I know people don't really value it these days, but to me there is great value in (stupidly) simple technology.
The more complicated a system is, the more prone it is to breakage. We have lots of areas in our life where we already rely on complicated circuits. I don't need to add headphones to that list.