This is a terrible comparison, I don’t know about others but I use headphones multiple times per day and needing an adapter is an unnecessary annoyance

What mobile phone has those?

Personally, I've never met anyone who had a need for reading floppy disks or connecting their computer printer to their phone, but I know many people who like to listen to music with their wired headphones on the go.

bluetooth headphones have a noticable delay for anyone who pays attention.

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.

Isn't any delay measured and accounted for in syncing playback of videos? When was the last time you've used a great pair of bluetooth headphones

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.

> Isn't any delay measured and accounted for in syncing playback of videos?

It can be, but your operating system needs to support it.

Support for audio delay compensation is pretty good on macOS. No idea about other OSes, though.

It works everywhere. There is not much to do with delay on interactive content though.

Ever played games with bluetooth headphones? Anyway, who wants radiation directly aimed into their brains.