Re: Nomenclature fixes around self-signed certificates

> It will eventually be, but isn't yet.  Also, without that line, it
> doesn't become clear at all what the "pinning" is supposed to
> achieve.  So I'd rather keep it as an explanation.

It doesn't make it clear to me. It confuses me. It's not validated, but 
it's similar but it's different. I honestly no longer get what it means to 
be pinned. I don't think I'm the only one. 

I'll log an issue to remove the line when the spec is clear.