people who are, as you’re alluding to, bad at language simply won’t show up on a platform like this that’s all text

I absolutely agree, this is making for another related problem, which is it's dividing people. We're not all seeing the same things, we're not understanding each other, we're moving to wildly different spaces from each other, and it's creating bubble universes where we view each other as separate species.

People who adore language and reading and writing are going to soak up the world's diverse perspectives and ideas like a sponge, and will seek out other infonauts in the world and will have much broader perspectives that may in fact become exclusionary quite easily.

I don't think someone with a more... lets call it "visual" intelligence system is a lost cause, I honestly think if you're someone who hates reading and can't write you're handicapped, but we have a modern society that is supposed to at least, take care of the handicapped like we've been doing for millenia. There are ways you can understand the world and abstractify information, but it's going to be a much greater challenge, and people like this are more likely to stay in their own family units and social circles of people just like them so they avoid ridicule or embarrassment.