Very far, yes, but also in a fast moving field.

CGI in films used to be obvious all the time no matter how good the artists using it, now it's everywhere and only noticeable when that's the point; the gap from Tron to Fellowship of the Ring was 19.5 years.

My guess is the analogy here puts the quality of existing genAI somewhere near the equivalent of early TV CGI, given its use in one of the Marvel title sequences etc., but it is just an analogy and there's no guarantees of anything either way.