That's easily solved by models intentionally introducing the odd grammatical error here and there, just enough to convince the sceptics, not so many as to give the impression of being unlettered. A bit like the mythical 'RHS button' (which stands for 'real human shitty' but in reality is called the 'Shuffle' or 'Swing' function) which is supposed to make mechanically-precise drum machines sound more like human drummers.