I do not know much about Cloudflare. It was my impression that they were a legitimate business on their own right. They very well may have a partnership to protect CIA operation digital assets, or partner with other departments for other purposes (protecting US assets during the cyberwar). This in itself would not imply that they are a 'front', just a partner. To claim a front you would have to have some reason to believe that CloudFlare was infiltrated by, bought by (like Condolezza Rice at DropBox) or started/managed by a gov't agency.
I would not claim to believe that they are a front or a partner. I'm not a good person to ask though, I don't know very much about CloudFlare.
The danger of making such jokes, even when they are funny like yours, is that it clouds legitimate and reasonable discussion about the ways in which US companies support US national security efforts.
There is no need to ridicule this poster, as parallel questions about national security efforts and how, where and when US tech companies help are topical, factual and technical.
