Well, that's what we all did like 10-15 years ago with nice double-DIN decks that had nothing to do with the car besides taking power from it and perhaps some steering wheel controls. It was just a hard-wired boombox, 100%. Now, the stereo is in fact properly a part of the Infotainment System you cannot replace, so as it ages out in a perfectly good vehicle, the entire car deprecates faster than it would have in decades past.

Even my 2015 Mazda has enough vehicular settings in the infotainment menu that despite being replaceable with a double-din I haven't bothered because I'd lose all configurability there. I opted for a cheapo $100 carplay unit instead - the modern equivalent of the discman-to-tape adapters ;)