Do you think celebrities in the mainstream world are still using Bitcoin for their own benefit?
A lot of famous people in my country invest in bitcoin, I don't know if they are interested in blockchian technology but obviously they feel confident in cryptocurrency and invest in it.
I'd love to see someone like Keanu Reeves, Microsoft's Satya Nadella, or even Apple's Tim Cook using (and patronizing) Bitcoin someday.
Certainly no one can manage or sponsor bitcoin, bitcoin is a decentralized currency and it operates according to the needs of the market.