Yes, but it's also both. Everyone should manage their own feelings and exchange information both efficiently and respectfully.

That's your worldview. Crocker's rules is that you don't have to take receiver feelings into account you just communicate efficently.

I don't disagree that all people should. But Crocker's Rules are specifically to give the other person permission to give it to you straight because you assume responsibility and maturity to deal with the information itself, regardless of social niceties. And those rules cannot be imposed on the other person: invoking them yourself doesn't mean you can be an asshole back — as the very description of the rules linked in this article explains.