Wired headphones don’t have to incorporate their own DACs, which means any budget wired set will be better than wireless one of the same price - everything can go into the actual analog part of the equation.

The adapter is extremely inconvenient, it’s a small dongle that is easy to lose and you can’t even charge your phone and listen to music at the same time, which I personally do very regularly. Besides, making everything go through one port increases wear and tear and reduces reliability of the device.

3,5mm jack doesn’t take any significant amount of space and the value of extra teeny tiny piece of battery is ridiculously low. This has always felt like a bullshit excuse to me.

Just my 2 cents.