> that the integrated DAC is yet another component which can break and be basically impossible to replace

Meh. If you want your headphones to last for ages, you could go just a bit higher end and get a pair with a replaceable cable. Then you can just swap the cable with the integrated DAC, regular 3.5 mm jack, or whatever.

I used to have a lightning cable for my Shure IEMs, worked great until the cable developed the usual problems around the connector, just like your regular analog cables. I then bought a BT adapter for the same headphones and never looked back. I've had them for 15-16 years now, still work as good as new. The BT dongle is something like 6 years old, and the battery still holds a good charge.

My adapter is a bit of a pain nowadays since it's the last thing I have that uses micro-USB for charging. I hear Shure has released newer adapters with USB C and no wires at all. But that's too expensive to replace something that still just works.