Elon is playing with some things, even if not 100%. At the moment he aybe sad because the Cybertruck is not selling so well, the advertising for the car is well. Or if one of his spaceX rockets explodes, then he will definitely sad. But he is a gamer and i guess with so much money he will see some of it as play money. There are almost no limits for him, so why not play with bitcoin too. He has done the same with dogecoin in the past. I hope that one day he will manage to create a colony on another planet. Or maybe one of his children will do it.
When it comes to the crypto space he's already done that on dogecoin and memecoin in previous years but ultimately creating a hype for bitcoin is obviously going to be a 50/50 situation for him even less so.
Even if there is a buzz in the end that he did only for profit and the development for bitcoin was only for the short term not the same as the hype he created with the previous memecoin.
For sure in this case I doubt he really likes this kind of path by being in crypto other than for his own benefit by utilizing his popularity and large following in the end.
At the end of the day he's just playing around with things and I'm pretty much in agreement with this.