"Transition to Static

"Based on a funding shortfall, NYU Cybersecurity for Democracy have come to the difficult decision to mothball the ongoing Ad Observatory project.."

Appears this project has been closed, see https://adobservatory.org/transition-to-static

Good idea and will hopefully generate useful data.

Do your bit for Democracy without even trying. These guys are good and deserver your support. A bunch of nice nerds at a french and american university supported by a grab bag of non-profits that you'd approve of.