True wireless earbuds don't necessarily have to end up as electronic waste when their batteries reach the end of their lifespan. Fairphone demonstrates this with the Fairbuds 2, whose batteries can be easily replaced. The earbuds also offer active noise cancellation and support for Sony LDAC.
Bluetooth has a delay for most codecs. Do not ask me how it is exactly done but there is a feedback to the application so that it delays audio to match video for the bluetooth delay. Some years ago a new Linux audio subsystem was developed, and this thing did not work at start but they fixed it later. From that time is my memory.