https://en.wikipedia.org/wiki/Jason_Bradbury

Yes, it also released for the Atari Jaguar and Sega Saturn at the same time as the PS1, but those systems sold considerably fewer units than the PS1.

I hate to tell you this, but Rayman has been retro for a long time. His first game came out on the PS1, and then six years later on the Game Boy Advance.

I also find entering numbers on a numpad to be much easier and feel more natural, probably because of growing up with calculators. They definitely have a place on modern keyboards.