Maybe the answer is trivially "the sort of person who can afford to buy $1k+ headphones", but this comment makes me immediately think "what sort of person buys $1K headphones and then buys a phone they can't use the headphones with?".
More seriously, why don't you get a better phone? (Or carry around an audio player?)
Took a road trip last summer with an iphone X as the audio and GPS, boy what an annoyance. GPS drains battery like nothing else, so I had to keep cutting music to charge the damn phone. Why couldn't apple make a pass through charging dongle, this one is so dumb.
Those of us who cherish our headphone jacks still desperately want them back, there's just no great avenue to express our rage.
I want my headphone jack.
I have $1K+ headphones that are effectively collecting dust because I can't plug them into my phone.