Obviously Musk is interested in the hype around the doge.
You do realize that he is the catalyst that made the hype possible, right? If it was another person that has no influential power when it comes to technology, not a lot of people would've listened. But if it's someone who has a great background and has something to show as result, like Elon Musk, it's going to get viral and hyped for sure.
I guess now is some kind of a turning point within the crypto space that Elon has started yet again, with all the environmental issues that Bitcoin has and looking for "that" alternative. The hate is going and a lot of petitions are coming in too.