[Fnoord]

Thing is, the keypad isn't used 24/7 (though it was great for multiplayer on same keyboard), and the mentioned variant is portable. This allows flexility. For example, (assuming right handed mouse here) it can be put on the right side of the mouse instead of the left. Or it could be used on an armchair of a sofa. It is perhaps a cheap one, not caring about dirt or wear, but you could buy a mechanical one or a physically more nice one.

If people can use one Azeron Cyborg with one hand (or two with two hands) as a way against carpal tunnel syndrome then 80% and 60% keyboards are likely just a hack to keep backwards compatibility whereas the better long term solution is likely a proper alternative (with e.g. chording).

That said, I'm happy with my 80% (not with the 60% due to it missing arrow keys which I sometimes use, for example with a shell). But vertical mouse with a lot of buttons are rare (Azeron Cyro is an exception), so for now I'm using a Logitech Vertical MX.