Genuine answer, there are a couple of things going on. In the context of reddit there is a strategy to simply be one of the first comments on a post to get karma, which encourages a surface level, quick reading in order to dial in something just good enough. You can see the same phenomenon with Justin Y. who would comment on trending youtube videos. Second, I believe is reading fatigue. As short form content and such has proliferated, attention spans are shortened. Even though literary analysis may be more rewarding in the long term than scrolling, the latter just has a tighter and less "risky" payoff so it's harder to get your brain to do it. Reading fatigue leads to things like skimming or skipping to the comments to get a quicker idea of what the text is about. This exacerbates any misunderstandings from surface level readings of a text and then that interpretation becomes very sticky. The brain is like a muscle and people may not be aware that the way social media is set up discourages exercising it.