>Not the author, but I think the proposal would be for browsers to not display scary warning pages HTTPS requests using self-signed certificates where the hostname is an RFC1918 IP address.
In this case he makes no reference to hostnames, but short hostnames (not fully qualified) are a similar case. I believe they should still display a warning, but perhaps adjust the wording. SSL certs are not just useful for validation (domain validation, exstended validation) but also for fingerprinting. Self-signed certs are not a security risk provided you confirm it has the expected fingerprint and/or install it so it appears in browser as validated.