@bit101 @imbl I first came across this site a couple of years ago. At the time, the site itself was much less informative about who was behind the initiative, but even at the time it smelled fishy, and I suspected that the main point was actually to help AI rather than humans. This thread confirms it, so I guess it's time to update my write-up at the time with a link to this thread.
https://wok.oblomov.eu/tecnologia/not-by-ai/