After reading a few of the dialogues, love reading these BTW, I highly suspect that Plato often misrepresented Socrates- would often put words in his mouth. With that said..
I think it’s very OK for Socrates to be wrong or to disagree with him. He’s the kind of guy who would change his opinions in light of conflicting evidence or an iron clad logical argument. Just because he said that about writing doesn’t mean he’s right nor does it mean he’s done with the tangent.
I forgot to add: Socrates actually does sort of say that even writing is okay—as long as you're doing it in the right spirit (seeking truth) and are not deceiving your audience.
In the Phaedrus, Socrates rails against the "speechmakers" who don't truly know what they're talking about, but instead write based on "what is likely" to persuade the audience.
And yes, in the later dialogues (e.g. the Republic), many scholars agree that Plato used Socrates as his "mouthpiece". I don't care either way, they're insanely fun to read.
I think it’s very OK for Socrates to be wrong or to disagree with him. He’s the kind of guy who would change his opinions in light of conflicting evidence or an iron clad logical argument. Just because he said that about writing doesn’t mean he’s right nor does it mean he’s done with the tangent.