He likes meme? well, Dogecoin is the coin that he saw that he can easily manipulated because there's no more control on it and it got an unlimited supply.
The devs were already out and it's now going to be there until all of us stops buying and using it. Elon just sees the things that we don't with things and that's why he's successful and many hates him if it's related to crypto.
what you say may be true but is it true that the purpose of what @elonmusk is doing is not just for a specific purpose and if it has been done with success then he will ignore and don't want to see that again. so that many are disappointed with actions that only aim to benefit themselves, even though it may be seen from his background as an entrepreneur that is his goal, to make as much profit as possible and he will not see the next effect which ends up hating him a lot because of this behavior. because many are disappointed with what is being done not only with Dogecoin it will happen later.