The function of this rule is not to cover all cases that may or may not be flame-baiting or trolling.
Instead, it is to make clear to community members that hiding behind a ruleset will not be tolerated, and the perception that a user is attempting to hide behind a ruleset in order to avoid mod action will be swiftly acted upon. The likelihood that the action in question will be reversible and transparent is so high as to nearly assure it, and thus damage from being overly proactive is mitigated down to the near-nonexistant.
The rule reserves the...I would almost say right, but it's not exactly what I'd go for; they're mods. They have protocols.
This rule reserves the means for future moderators to make flexible and active judgements on the spot when users act up without having to codify what stepping over a line is in all cases. It strengthens the institution of proactive, transparent, and reversible moderation with a heavy dose of personal judgement.
The mods are our peers, or so we hope. As such, they get to judge us and express their opinions just as much as we get to give input on forum rules.
Yeah, that sounds about right maybe?
What do you think?