As a nomad traveling around with a phone and ancient Surface
Ugh, I think no matters what happens, you lose. If your car has a CD player and is the main place where you usually listen to music, then it seems you would need to keep your CD collection in the car too, and that puts an upper limit on its size. Between the back seats and trunk, I could maybe fit a dozen or two beer-cases-repurposed-as-CD-boxes, but it would completely take over those spaces. And keeping even that small of a subset of the collection organized enough to be binary-searchable sure sounds annoying.
That was always the problem with CDs as a playback medium instead of just a long-term storage medium: inserting the CD back into the collection after playback. It's not terrible when you have shelving [and enough of it, since it keeps growing] but as soon as you have to pack things in boxes, it gets pretty hard to work with. I remember for a time there, before I had all my music ripped, where we were just listening to same 30 or 40 CDs sitting out in a loose unboxed pile that I jokingly called the "L1 music cache," over and over again. ;-)
Elsewhere you mention that you live in the car and simply don't have anywhere else to store things, so I guess this general kind of problem is going to be recurring. (Where do you keep your air fryer and microwave and coffee maker and stove and your wife's decorative bathroom hand towels that you're supposed to never use, the cat litter box, and the air mattress you put out when you have company staying over at your car for the weekend?) j/k but my point is that the cars have never been really CD friendly but if the car is your house and storage shed too, then .. oy, do whatever you can but it's never going to be convenient.
Music can't be the only thing where the market isn't catering to you. I might even go as far as suggesting the housing market as the number one mis-cater!
do you see how .. the decision to take [CD players] away seems much more to do with power and selling subscriptions than practical engineering capability?
Oh, sure! I didn't know that you couldn't get car CDs players anymore (I'm admittedly very out of touch with the new car market), but it doesn't surprise me that they're no longer something you can just take for granted by default. No doubt pushing subscription services played a later role in de-emphasizing CD players in cars, but you should keep in mind that real consumer demand had been doing that too, ever since around the turn of the century when HD-based MP3 players started to get popular. Subscriptions to proprietary streaming services are a bit of a late-comer to the CD funeral.
Even if there were no such thing as music streaming subscriptions, a lot of people today would be using their phones even in CD-ready cars. They would just party like it's 2001, playing files ripped from CDs. I don't know if that would be enough to remove CD players from cars, but I bet at least some manufacturers would have.