In terms OF bad equipment you're right. however, good audio equipment is expensive and the Vast majority of people don't want to spend that much just on some headphones to hear something they aren't really paying attention to.

There's also funfactor in having physical media and limited choice. A phone with an entire collection on it is just. . plain. standard. even boring. And the handicapped phone UI ruins the rest of the smartphone experience if you wanna do other things with the phone other than listen to music.

Modern CD players also read newer formats, unlike the old-stock CD players off of ebay from 30+ years ago that only read raw CDA tracks

I dont think most people like vinyl today because of sound quality. They just like the ritual of playing it and things like big cover art. If you want convenience then just listen to flac files.

MP3 is lossy, WAV is not. And that "warmth" you get with vinyl is just because analog sounds fuzzy.

CDs are technically better for perfect reproduction. I still prefer vinyl for most pre-80s material because of the loudness war. Mastering of releases has warped the discussion entirely

The only things I don't like about vinyl are the waste and off gassing.