The sudden growth rate in sales derive some people to capitalize on it. Mostly either Chinese manufacturers or drop shippers though sometimes big names get swept up in the frenzy too. Then the market is flooded and it's not cool or unique anymore, or the target audience is saturated and then it's forgotten. I suspect something similar is happening now with screenless fitness trackers right now (even though I bought one because I hate smartwatches but want a fitness tracker)
It's especially funny seeing people who are into "MP3 players for digital detox" speak on podcasts or online. "I love that it's not a phone. I just wish it had <insert random ass app(s)> so I can take it on walks and leave my phone behind" then those random apps are different per person. It's really funny.
Similar thing with the screenless fitness trackers I mentioned. On every single review or discussion board for them, you will find people complaining that a screenless fitness tracker is, in fact, screenless and that they wish it just had a small screen for their important notifications or if it can answer calls or get phone notifications or connect to LTE.
Music is cheaper than it's ever been for the consumer and segregation between genres or bands is non-existent on music streaming.
It's hard to socially signal when everyone can afford to stream and the search bar can show you Sabrina Carpenter just as easily as RYM or /mu/core.
However , you can socially signal if you spend money on an iPod, DAP, better headphones, physical media etc.
I know someone in my group who moved from Apple Music to Spotify because everyone else was using Spotify and she didn't wanna feel left out.
I also can't really share playlists with them, which is fine since I only listen to the same 1,700 tracks from the 90s or early 2000s anyway.
who am I socially signaling to if I have physical media in my basement? my wife?
I do think this take is lukewarm.
It's extremely hard to find a new production MP3/FLAC player with upgradable storage that don't suck for one reason or another. Plenty of perfect new ones, but they will have onboard BT or Wifi still.
Part of the appeal of the iPod is that it only had just as much hardware and software as it needed and was simple, which lends to its extreme mod potential that's fueling its continuing popularity today. A good modern iPod analogue needs to deliver on those fronts, too.