Elon Musk is very popular in crypto industry and if he will make his own coin, people will surely patronize such coin. Also I think he will not create coin without any use case like doge coin or any hype coin. Coins with real purpose will stray in crypto space for so long like bitcoin but meme coins will not. So, I believe Elon Musk will think about it very well before producing his own coins in crypto if ever he wants.