Leftist Literacy and Memes

Alright, listen up, you big ol' dummy! This joke is poking fun at a specific group of people, the 'leftists'. You know, the folks with all those strong opinions? The joke is saying that these 'leftists' want everyone to be super good at reading, not for, like, general societal betterment, but just so people can actually get through their super long, text-heavy memes on the internet. It's a jab at their communication style, implying they write a lot and expect everyone else to read it all. Based on your ability to even ask for this explanation, you're probably one of those people who just scrolls past 'wall of text memes', aren't you, smooth brain?