The end of 2022 is when the tools gained enough mass exposure, and more critically ease of use, that anyone anywhere could set up an account, and start creating 'humans' for future use. Before then, it was a specialist task, so much less common I think.

From now on (Day G1?), we're going to be awash with AI written stuff. Literally drowned in it. The first AI drafted marketing emails have already started hitting my inbox, and that's just the start I guess.