I expect it's a bit of both.

I can't speak for other parts of the world, but in the US, it's not uncommon for people to walk on eggshells while reporting information to coworkers (and especially managers) because there's absolutely a large cohort who will shoot the messenger. Crocker's Rules are undoubtedly a reaction to the extreme whereby managers in particular fail to receive receive crucial information because their reports are too afraid to pass it along.

In other words, people fail to communicate out of fear born from an assumption on how the person they're communicating with will react. The original quote would have you ignore your own fear and hand over the information, while your modified version would indirectly address your fear by refusing to take responsibility for how the recipient might feel. Whichever way you go with it, you're largely accomplishing the same thing.

FWIW, I based my version on the source of Crocker's Rules linked in the article itself.