And also no latency. Even expensive Bluetooth headphones and earbuds have crap latency. The systems that don’t are either proprietary and not widely supported (e.g. aptX) or expensive 'phones-and-dongle arrangements that must always travel in a pair and still don’t compete on latency with a pair of dollar store earbuds.
Your video player “can” account for latency if you configure it correctly which I imagine the majority of people don’t do, and simply put up with it. Ditto with your music playback always lagging 1-2 seconds behind your control inputs. I have never used a media player on any platform that automatically figured out audio latency. Maybe the iDevices do if you pair them with Airpods, I don’t know; I don’t own anything Apple and I never will.
It also matters for music production, and makes life a lot more pleasant for audio/video editing. Plus, latency is just annoying in any setting.