your questions are too many op . i thought your only asking if were is he but then you have other follow up questions  . where is sato naka ? were i dont know because no one ever found him but some says he is dead now  .  that could be the reason on why he never talks here   but even if he is alive , why will he do that ? bitcoin is already working according to his plan so i dont think he will make announcement of something ..  about  using btc well people already used to the volatile state