> why John no longer does public presentations(as people keep stealing his unfinished ideas)

That's your opinion or you have a source for that?

he said it in a video, i think it was in the recent wookash podcast. although you might fing a short clip of the segment somewhere.

The idea of languages "stealing" ideas from each other is not something anyone building a language cares about. I'll just charitably assume you've completly misinterpreted something he said.