General standards of conversation (aka not being a dick) forbid you from insulting others. Your adoption of Crocker's rules do not change that, as clearly communicated by the linked page.

Note that Crocker's Rules does not mean you can insult people; it means that other people don't have to worry about whether they are insulting you.

Your tone still matters unless you are communicating with someone else who is operating under Crocker's Rules.