What makes you think Ruby withered? It has been stagnant, but not withered.

The community withered. 10-15 years ago the cries of “Ruby” “Ruby” “Ruby” were deafening. I used Ruby and I really enjoyed and I thought I would leave Python behind but it but it never went anywhere from there. Somewhere around 3.x I think there were a load of breaking changes introduced and I imagine lots of people like myself just went back to using more stable platforms.