I have an android DAP (music player) that runs Android 7. It’s a box with a headphone jack (remember those?) and it’s sole purpose is to play offline music from an SD card.
I side-loaded a few music players, because there’s no way I’m putting my Google password in android 7 in 2024.
I’d be upset if I couldn’t side load. These DAPs never have an up to date android.
Let’s hope the music apps I use don’t block sideloading.