I think you're reading too much into it.
I think Elon just thinks Doge is funnier.
Elon should be selfish, of course, so should you. You come along and tell me you're altruistic I'm gonna think you're more of a Bankman-Fried.
I never felt like Elon presented himself as an altruistic savior, always sounded to me like he wanted to do cool shit to make the future cool.
Military contracts is a valid criticism.