It's a ten dollar dongle that can stay attached to your audio cable out of the way when not using it and has no perceptible affect on sound quality, and there's even passthrough options for when you need to charge, so the whole no-audio-jack thing is a moot point nowadays. It's a solved problem for years now.

I'm not saying they're related, but they also make and sell wireless headphones...

In this case, you may be interested in Librem 5, although the hardware is weaker.