No doubt, he can create his own coin anytime he want. Even there are already some coins in market which were name after elon mask like elon coim! Although he doesn’t have it. But If dogecoin can fulfill his demand then why Should he create a new coin? Doge has Structured like btc, so elon already buy a lot share like CEO and maybe making plans based on it. So still he haven’t create his own coin
creating meme coin is easier for him btw it can be detrimental for the markets and investors.
meme coins is structurally up and down, now doge is known as meme coin, you can not compared doge with btc.
don't stay with meme coins, if you don't want to lose your hard earning.