I sit in front of an Oberheim MC 3000, and love the piano-like playing experience and use every key.
However, it is disingenuous to compare a groovebox to a digital piano. It's also bold to assume that someone wants or needs 88 keys or even wants piano-like action. It's something different. That's valid. If it isn't for you or me, that's also valid.
https://dcpianos.com/products/kawai-ca48-the-ultimate-piano-...
You can add beats, different sound libraries, and maybe you can add a microphone looper for ~300 dollars extra.