I just found out Tim Pool did a special on why the Left can't meme. He takes a different slant than previously discussed. He argues that Memes are not necessarily a right-wing thing, but memes require people who are creative and individualistic and conformist consumer types are much more likely to lean left.
Pretty much the same sort of conclusion I'd reached myself.
To meme effectively, you need a sense of humor. And a certain type of iconoclastic sneaky creativity.
The "Left" so-called are the opposite of that.