Yeah, let's introduce a major structural flaw and a point of failure to a perfectly sound design :agony-shrooms:
And for what?
"Foldable headphones are so convenient and portable when you're not using them!!"
YOU WEAR THEM AROUND YOUR NECK WHEN NOT USING THEM, DIPSHIT
These stupid hinges turn cheap headphones from durable and reliable backups to instant e-waste
Source: just had a pair of cheap bluetooth headphones crack at the hinges because it was slightly below freezing
Most Bluetooth headphones still don't let you do stereo and use the microphone at the same time. Your headphones actually have a custom dongle that uses a proprietary signal other than Bluetooth, which probably does let you use both at the same time. Really I wish that proprietary shit they have with more bandwidth would be opened up and replace Bluetooth entirely.
But IMO a good thing about wireless headphones is they actually make better wired headphones. The audio cable is removable whereas on wired headphones it tends to not be. If something happens to the cable on wired headphones you're kinda screwed.