bluetooth headphones/audio have a long list of problems, but I generally don't want to enable bluetooth on my phones at all. It's used extensively for tracking and can log your location at a distance of within a foot from where the beacon is placed or from over 20 miles away. That means I need a headphone jack.
People use headphones for phone calls not just videos. The delay is annoying. Mobile phones already have lag compared to land phones and BT makes it worse.