Personally I'd prefer a warning about sites that pull the things like what this one does. I see that people are already warning about PDF files, some other similar warning about autoplay that can't be easily stopped would be nice for office environments.

I didn't know it was against guidelines. Often I'll come to the comments to see things like links to web archive to get a better or working link to contents. Comments are helpful, don't know why such a thing would be against guidelines.

Edit; a number of other comments are listed here about blockers etc etc. Maybe it would make more sense to not post sites that pull stuff like this at all?