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.
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.