You're misinterpreting the quote. Socrates is saying that being able to find a written quotation will replace fully understanding a concept. It's the difference between being able to quote the pythagorean theorem and understanding it well enough to prove it. That's why Socrates says that those who rely on reading will be "hard to get along with" - they will be pedantic without being able to discuss concepts freely.

Likewise with AI the appearance of reasoning without the substance could lead to boring exchanges of plausible slop rather than meaningful discourse.

I mean Socrates said enough stuff that was wrong or didn't have any scientific understanding either.

Simply put at humanity wide scales written information is by far the most important thing you can have. There is kind of a Sortie's paradox occurring where you have individual knowledge that can be held by one person conflicts with systems knowledge that has to be redundant and can be easily transferred.