Archives don't delete stuff, nor do they have much capacity to do much computation on their archived data. Whereas if blekko still existed as a search engine, I'd just push code to refuse to show cached pages or snippets containing text that likely means the CloudFlare problem. 15 minutes work, and the underlying data would expire fully in a couple of months.
So I would completely disagree with your speculation about what's easy or hard. (Note that I've worked at a search engine and an archive.)
So I would completely disagree with your speculation about what's easy or hard. (Note that I've worked at a search engine and an archive.)