Yes, Cloudflare's data about A is worthless as proof for B. Cloudflare never made the claims that were based on those graphs. It just shows that traffic out of datacenters stops when those get hit, to the surprise of nobody, proving nothing.

Not GP, but please take a look at CloudFlare's data. As far as I understand, it was only measuring indexing bots, without attempting to look for anything political or shady.