whatever Elon Musk does, will have a good impact on the development of cryptocurrencies, maybe for now Elon Musk wants Doge to be known by many people, but I'm sure there will be many altcoins ready to do it, hopefully Doge's price can rise to new ATH and other altcoins follow that trend
Nope. He isn't part of any development team in crypto. He is just an influencer who uses his name to gain more money. He isn't even building any infrastructure for blockchain developments nor even backing up projects related to this. He's just busy with his Tesla and SpaceX projects and doesn't want to recreate money in a good way.