Rule 1.9 [backseat administration]

[aDisabledDeer]

I totally get your point. But eitherway the rulebreaker will just respawn or disconnect and keep going. Not to mention that it can be abused, excusing yourself over your own rulebreak because "he started it first" or something.
It can also end up leaving a player unpunished, because you chose to stop him instead of reporting him. Of course, you could report him aswell, but not many players will keep that in mind if the problem gets solved.

Perhaps you, Disabled, and other members, know what's right or wrong according to the rules.
Perhaps you can handle the situation without any further provocations.
But keep in mind that there are others out there who would possibly just make the whole situation worse.

Just saying that things would not look pretty, and the rule is good where it is.

I completely respect your point and where you are coming from; however I would argue that the rule needs to be taken on a case by case basis and not used as a blanket ban.

If someone, for example myself, were to lock a prop minge in a room and await the admins to deal with him, should I receive a ban? I would argue, of course, no.

If someone were to keep shooting a prop minge in the middle of the street, and kill him when he respawns (causing more chaos) should he be banned? I would argue that he should have action taken against him, not necessarily banned.