What can Apple do though? Any change that cracks down on this will render these devices unusable for thousands of people, generate tons of e-waste, and create a huge backlash towards Apple.
It reminds me of when FTDI permanently bricked FTDI clones [0].
Further, I'm not sure I agree with the OP's vitriol against these manufacturers. They're using an open standard to bypass Apple's MFi tax. It's a hack for sure, but if it leads to cheaper devices -- which is the ultimate goal for this segment of product -- I don't see the problem. I could see the problem if they're advertised as wired headphones without mentioning Bluetooth though.
[0] https://www.zdnet.com/article/ftdi-admits-to-bricking-innoce...