@May I don’t know to what extent this answers your question but I think one of the claims being made (not mostly by people in the conversation) is that some kids are just straight-up ending up illiterate*/barely literate due to poor early-childhood reading instruction + no intensive catch-up later in life
(though I agree that this is a poor explanation for “people interpreting posts online in really stupid ways,” I think the person who originally came up with the “maybe they’re just misinterpreting you because they Can’t Read” hypothesis was being, mm, overly charitable)
* broad term that covers some people who can in fact read some things


