Elon Musk is a cult figure for some of the smartest people on the planet. So what he's doing with the Dogecoin baffles me.
I mean, they say the Internet doesn't recognize any form of hierarchy, but I think Musk has delusions of god-like grandeur.
Basically, he is kind of joking around.
DOGE is THE prototype of a useless coin or "anti-bitcoin".
According to his "fate loves irony" statement, he propagated DOGE because he was sure that it will pump some day.
It became a self fulfilling prophecy, also because of his tweets.
On the other hand, following twitter for at least a whole Bitcoin halvening cycle, you may be aware that some - probably many - other people also wrote tweets like "DOGE!", "DOGE TO THA MOON!", and so on, which didn't get any attention.
Honestly, who DIDN'T think that DOGE will pump after Musk's related weets. I wonder if he took advantage or if he just did it for the lulz.
This is the first time I have seen someone say another coin is the anti-bitcoin.

What makes it so unappealing to the bitcoin maximalists and not some other coin such as ethereum?

Anyways the last tweet from elon really rallied the musketeers right before the
big show tonight.
Think this will be the movement to mass media, whether that be good or bad for bitcoin, that crypto was waiting for.
I am not sure if I have succumb to the FUD but I think most who have suffered in the past year from what has been going on in the world (and still is!)
needed a break of this kind even if it is
just a joke! 
Sorry, by "anti-bitcoin" i wasn't meaning "bitcoin killer" (lol).
Anti-bitcoin in terms of anti-active development, anti-scarcity and anti-useful (and more), so kind of the opposite of Bitcoin in the cryptoverse
It's just a joke, but twitter peeps took it too serious. Good for Doge, anyway. But honey badger doesn't care