Permanently attached to the end of the cable, not the phone.

I might be swayes if phones had two usb-c ports . That would be nice

When I’m on the go I much prefer wireless, no cables to impede my movements and the quality loss gets nullified by ambient noise, I wouldn’t be able to enjoy Hi-fi audio anyway so I keep my headphones and DAC home where I have all the bandwidth in the world and the silence to enjoy the quality of the recordings and of my cans.

But this is almost all false or just speculation.

Instead of having audio and usb-c, now you have usb-c port, usb-c headphone dongle, the finally audio port and usb-c port again. Unless you want to intentionally buy a usb-c exclusive set of headphones that won’t work with whatever next “revolutionary port technology” comes out.

As long as they still work, good headphones from 40 years ago are still good. Headphone tech has not significantly changed. Amps, DACs, etc have, but not the actual drivers.

As far as space goes, reasonable DAC components are getting smaller and smaller while phones tend to be getting larger as people want more screen space. The space savings on hardware here is not significant. Seriously go and look up sizes of the components needed for audio out.

As far as thinner goes, the width needed for a headphone jack is like 2mm more than what’s needed for a usb-c port, and there’s width needed for internal speakers either way. I’m also not sure how much thinner people want cell phones to be at this point. We’re pretty close to the point of sacrificing device drop resistance for size anyway (arguably we’ve passed that point with most people doubling the size of their phone with a protective case). Not to mention that the real thing preventing more thinness is the camera lenses now, as easily evidenced by the camera island bumps all phones have now.

Lastly, you can’t seriously be arguing that analog audio out represents any significant amount of attack surface kernel wise. Like holy shit man. Wow. Yes, technically every line of code is increased attack surface, but it’s a huge assumption that USB-C audio is in any way more secure or less surface.

Why should we condense the ports into 1? This is worse, not better. In fact some Chinese phones also have an IR blaster so you can control your TV and Aircon from the phone.

As for thinness is the phone, my Sony Xperia 10iii is 5.9" and very thin. Probably the smallest phone on the market and it has a headphone jack, SD card slot, and full IP68 waterproofing. Plus 3 lense camera. No need for massive stove top lenses on the back.

It can easily fit on any phone. The jack is tiny. It’s just a lie from the manufacturers to force you to buy expensive Bluetooth headphones.

My wired in ear headphones take up WAY less space in my pocket than bog bulky Bluetooth headphones with their charging case.