Meanwhile I still cannot get Bluetooth audio to work on my Linux workstation. I tried 3 different Chinese USB sticks already and asked ChatGPT for help. Maybe I should give up and try some more expensive brands. But keep in mind that ESP32 is also of Chinese origin.
Make sure you're using pipewire. If your bluetooth headphones require Bluetooth LE, make sure it's enabled in the bluez settings. Also, make sure your bluetooth adapter supports Bluetooth LE.
This is such a weird comment. You can find things in the US where there are cheap versions that don't work and more expensive versions that do work. Going out of your way to by less expensive things and then blaming the Chinese on the quality, rather than your cheapness, is really a decision.
From personal experience, I've got dozens of esp32 devices around my house and they all work great.