That makes sense, yeah. But is there really only 1 for them to do a variant of? And why are people upvoting multiples of essentially the same meme? Witness the plethroa of Pelosi/Wicked With of the East memes & gifs, nearly the entire front page on onwards?
In terms of time zones, many claim to be American, yet start posting in the wee am hours. Sure, some might get up early, but it makes more sense if they were on the other side of the Atlantic.
Regardless, that's just some, your explanation does cover most at least.
Sorry about the delay, and goodness, this took some digging. One more from another I have to search through the massive pile again, yay!