CloudFlare decided its DNS should be the authority to the end user and Archive.is's DNS should be the authority only to CloudFlare. CloudFlare is breaking the bond between the end user and the Service provider.
What CloudFlare is doing is centralizing authority to itself rather allowing authority to be distributed to all owners of the domains as intended. An argument can be made that by using 1.1.1.1 you are granting CF permission to act in this role - some users may even prefer it.