First thing is we’re just looking at ImgFlip which is far from representative of the country as a whole.
Second: Biden’s candidacy does not really inspire people to go out and wear blue caps, wave Biden flags, create maskeshift Biden flotillas, attend rallies en masse unmasked, etc. etc.
Never has and never will. Biden’s appeal simply isn’t cult-of-personality based. I’ve made maybe 5 or 6 explicitly pro-Biden memes in my life, and half of those were basically tongue-in-cheek mocking the fact that no one makes pro-Biden memes.
This election is all about Trump one way or another whether you’re for him or against him.
So the real meme tags you should pay attention to: Trump is a moron, Donald Trump is an idiot, Trump is an asshole, f**k Donald Trump, Trump is an orangutan, Trump is an douche (yes, “an douche”)