If you watch enough youtube per month to see an hour of ads and you can’t block ads for some reason, you may actually be losing time/money by not paying the subscription. That said, there are ad blockers for almost every platform so it shouldn’t be too difficult to find one that works.
Usb is a carrying digital signals for the most part while headphonea are analog. So you have 2 options:
Both options prevent you from chanrging while using headphones unless you use a splitter or wireless charging which is not ideal
3.5 mm may not be the king, but it’s extremly simple and fairly robust and has little to no disatvantages except for wireless headphones sales ofc. You don’t have to charge these heqdphones, you don’t have to worry about losing one of them.
Wireless headphonwa have their uses, I doubt they benefit the majority of people tho.