That was published on 1st of April. It's an april fool's joke. There are loads of April Fool's RFCs. It's not a litmus test for reading, it's a community having fun.
I think the litmus test being suggested is to include the joke RFC in the reference section of a different technical specification as a way to verify the specification is being reviewed in detail.
BTW: A group tried the IP over Avian Carrier: http://www.blug.linux.no/rfc1149/ The ping times were unimpressive.