No they aren't and I really hope it stays that way.

Headphones get traded all the time, headphones stick around for years and years all the time. People have well over a decade old HD600s, Beyers, etc.

The vast majority of wireless headphones are inherently disposable garbage. Once the battery is dead, people throw them away, and even if you could replace the battery, with different levels of effort, a lot of people won't bother.

I really don't like things that are made to be disposable and I'm not going to buy wireless headphones because of that.