Leaving aside that Plato's Republic was the most well known text in the ancient world (and so the idea of Noble Lies may certainly have been floating around the ancient world), I think Wilson greatly underestimates literacy in the ancient world. Larry Hurtado comments that:
The particular importance of graffiti is that they don’t likely reflect the activities of “elites,” but more likely people of lower/various social levels. One can’t imagine Cicero stopping to write graffiti! But also graffiti seem to have been addressed to similarly diverse social levels, with the expectation that various/many passersby would be able to stop and read them. As the cited studies observe, this all means that, at least in urban settings, some meaningful levels of literacy were much more common that some have previously asserted.
To bring this around to the focus of this blog site, the NT and origins of Christianity, these studies reinforce the view that early Christian circles were rather “bookish,” as I’ve described them in my book, Destroyer of the gods: Early Christian Distinctiveness in the Roman World (Baylor Univ Press, 2016), 105-41. Right from the first decades onward, Christians read, composed, copied and circulated texts on an impressive scale, given the small number of Christians at the time. So, with all due regard for “orality” and the ancient appreciation of the spoken word, in early Christian circles (as, actually, in the larger Roman-era world of the time), texts were central as well. For an excellent introduction to the matter, I recommend (as I have frequently) Harry Gamble, Books and Readers in the Early Church: A History of Early Christian Texts(New Haven: Yale University Press, 1995).
And anyway, you don't need to be aware of literary precedence to lie. As Carrier says:
Of course, a case can be made for the apostles dying even for a hoax: all they needed was to believe that the teachings attached to their fabricated claim would make the world a better place, and that making the world a better place was worth dying for. Even godless Marxists voluntarily died by the millions for such a motive. So the notion that no one would, is simply false.
For an outline of the Noble Lie model of Christian Origins, see here: http://palpatinesway.blogspot.com/2018/03/examining-easter-peering-behind-veil-of.html