I also own a W212 E-Class, which I purchased used a few years ago specifically because it's the ideal balance of features I care about (e.g., heated seats and the ability to play MP3 files) without most of the ones I hate (touchscreens and subscription services).

Despite being nearly a decade old at the time of purchase, it was in nearly perfect condition, well-maintained, had low mileage, and had already faced most of the depreciation it ever would.

The enshittification began even before that. My W210 is a fully computerized, fly-by-wire machine as well. While the user interface is nominally simpler than your W212, the computer systems are still quite user hostile. In particular, anything service related. Servicing the car without Mercedes-Benz's proprietary Star Diagnostic System is an exercise in frustration.

Computers make cars worse. Full stop. I really miss my 1984 W123 wagon. That was an excellent car. It had no software in it.