Internet Relay Chat's been one of those things that's always felt out on the edge. I've been on EFnet since perhaps '03, and it's a lot quieter than it was...
With people moving en masse away from the centralized sites and their Firebase-implemented chats, we may see a pick up in traffic on the IRC networks, which would be good to see.
There are joke RFCs almost every year, so it's not unprecedented to add to the standards. This year, one of the additions was a Death Flag to TCP, to indicate when a connection is about to terminate. The RFC Editors are very approachable when it comes to the Apr 1st RFCs: a "real" standard would need to be drafted by someone actually in the field, but the Apr 1st's are open to public submissions as long as you're willing to redraft/edit in accordance with the documentation standards.
It's worth noting that the Clacks header is an unofficial campaign, and hasn't been standardised; the 'Pedia states that some 84,000 sites return X-Clacks-Overhead, and my own is one.