No cameraphile uses on-camera software to.. do anything. That you can do better on a computer than a phone then goes without saying.
I'm not going to carry it everywhere no, nor did I say that. (Actually I didn't even say it applied to me.) I carry my Panasonic TZ100 when on holiday or otherwise desirous of better-than-phone photos. It fits in my pocket. Not the same one as my phone granted, but nonetheless in a pocket while in a case and straddling a spare battery.
There are audiophiles and audiophiles. A good chunk of them will laugh at Monster cables et al. as much as any of us.
You can appreciate a better DAC than found in most/all phones without descending into gold-plated USB-C charging cables that maintain optimal audio nonsense.
And even that assuming playback of some locally stored file. I'm not sure any of the mainstream streaming Services offer a format/bitrate that it's not possible objectively to do better than.
