Reddit's constant armchair activism and political scorekeeping is tiresome and downright counterproductive at times, but I think cringeworthy nicknames/memes like "President Elon" are more easily explained as the "reddit zeitgeist" latching onto something it found funny and then beating the dead horse into a bloody pulp.
You see the themes everywhere. Similarly worded comments and posts made at the same time and upvoted in order to manipulate thoughts and emotions.