On Reddit's r/China_irl, I saw a poll about the US election in November. What surprised me is that Donald Trump seems to be called 川皇. Searching for 川皇 on Google indicates it's not just a typo, so I'm fairly confident it's some kind of slang expression.
Question: What is the meaning behind 川皇, which is some kind of slang for "Donald Trump"?
I noticed it looks visually somewhat similar to 川普 which is a transliteration of Trump (along with 特朗普), so maybe the 皇 ("emperor") is an insult aimed at his authoritarian tendencies (along the lines of "Emperor Trump"). Just my guess at this point.