Elon Musk? I don't think he qualifies. He has done nothing except buy some bitcoins. Putting "#bitcoin" in his twitter bio doesn't count as evangelizing.
pros and cons are going on here...
I'm not really sure if Elon really supports Bitcoin but in fact, the whole media spotlighted him when he said Tesla had invested billions of dollars in Bitcoin. Even though Elon sounds new in the crypto world, his influence is very big cmiiw.