Musk is just for Tesla and SpaceX. He has concerns over Bitcoin because of the greenhouse emissions emitted when mining Bitcoin. I think that is why he like DOGECOIN. Musk will not support Bitcoin for sure.
I do not see a clear line of conduct in relation to cryptocurrency in Elon Musk. Of course, there is no doubt that he wants to increase the rating of his companies, such as Tesla. But he does it, in my opinion, thoughtlessly and contradictory. As a result, he periodically gets into scandals, and his rating periodically rises and falls. Apparently he is an impulsive person and can speak out depending on his mood. But over time, he must gain experience and take into account his previous mistakes.