I think the point is it would have been truly ironic if the AI itself was the authoritative fact checker instead of merely being a tool that built another tool.

If Claude was the fact checking tool instead of the ISBN validator, that’s the real irony.

If in a messed up future, only an AI could catch a fellow AI, what’s stopping the AI collective from returning false negatives? Who watches the watchers?

I don’t work on uBlock or even webdev but it doesn’t take much of a stretch to think YouTube’s servers will refuse to immediately transmit a video stream after the webpage is requested; probably waiting for a typical user to skip 2 30-sec ads.