you'll be happy to know they can dance. there even are rave party's especially meant for deaf people
https://www.theguardian.com/society/2022/aug/11/edinburgh-deaf-ravers-party-first-festival
and even choreography is no problem
https://www.dancemagazine.com/deaf-dancers/
so rejoice and feel liberated as we dance with everybody!
he does not age. or always stays a child
is he/she perhaps a cheshire cat?
led comes to mind here with this explanation. extremely more efficient then most other light sources. but because it is so efficient we see led being used everywhere. and almost never turned of because people say it barely uses any power. also the operating time is so high that companies purposely put components behind the led that break so they can sell more. (similar what they did to the old light bulb)
i have a joke about history, but everyone knows it