In other words, Cloudflare expects us to think they're so special that they should get to do what they explicitly don't want others doing.
It's bullshit, particularly for all the people who are victims of Cloudflare's manipulations such as the default use of Cloudflare DNS servers for DNS-over-https on Firefox, which users were never asked about before it was enabled for them (at least in the US).
It's actually really funny archive.is works from time to time on 1.1.1.1 which I'm assuming is when archive.is hasn't update their IP list / detection logic. I wonder how much time they spend maintaining that if they blocked everyone without EDNS it would be easy but since it's just Cloudflare....