Isn't it quite the opposite? The person invoking Crocker's Rules is saying, in effect, "my feelings about the information and how I might receive it are my problem to manage, not yours, just give me the information."
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.
From https://www.lesswrong.com/w/crockers-rules:
> Note that Crocker's Rules does not mean one is authorized to insult people; it means that other people don't have to worry about whether they are insulting you. Crocker's Rules are a discipline, not a privilege. Furthermore, taking advantage of Crocker's Rules does not imply reciprocity. How could it? Crocker's Rules are something you do for yourself, to maximize information received - not something you grit your teeth over and do as a favor.