I think it’s referring to the “you can’t block ads on YT or we might ban you” popups you get on YT occasionally, if you’re using an adblocker. I have only had it happen once or twice before I did a quick online search and found an extra filter or two to add to uBlock Origin, and then I stopped seeing them.

I liked it a lot. Watched the longer version of the movie. I’ve heard the theatrical cut was not as good though.