The fact that they don’t include a headphone jack that’s been an audio standard for decades makes their claims of sustainability seem like marketing bs. And the argument that it’s to make the phones thinner is bs too, since most phones now are bricks compared to previous generations. It was all a ruse to sell crappy bluetooth headphones with recharcghable batteries that are going to wind up in a landfill.
I never quite understood the headphone jack thing. It’s a nifty thing to have but an adapter is a one time purchase. It seems like nowadays lack of headphone jack is just a minor inconvenience.

Because they removed something that was convenient to try and force people to either spend more money on adapters or buy Bluetooth headphones.

And if you need to charge at the same time? That’s yet another adapter.

There’s USBC headphones

That is true, and you can get USBC dac cables for existing headphones that have the ability to swap cables.

But it’s still yet another thing you have to buy when your existing stuff already worked fine, and it still ties up the USBC port so unless you wirelessly charge you still need an adapter.

It’s just less convenient and as far as I am concerned removing the jack has offered no benefits to consumers.