Of course because he wanted to earn money, that's why he did it. I think Elon Musk's goals are the same as those of us here. It's just that his level of intelligence is different from ours in activities in cryptocurrency. So, I'm not surprised that Elon Musk is praising Dogecoin too much.
That's clear and I totally agree with you because if I personally were able to do things like Elon Musk did, then I would never stop tweeting about Dogecoin, because it's for the benefit that he can still achieve now, because in the future it's not necessarily the case he can still make more profit through Dogecoin even though the market is very good as it looks now.