I've seen a few comments about Bluetooth headphones and TWS earbuds but I don't think it's really too much of an issue. For over ear style headphones Steel Series have already proved the concept as they have a headset that has hot swappable rechargeable batteries. No reason other manufacturers can't design a fitted one that could be replaced.
As for TWS buds, so many of these must already be in landfill when the tiny batteries give out. We've already got rechargeable batteries for hearing aids that can be replaced by the user. I'm sure something similar could be achieved for TWS buds.