In a word? Yes.
But seriously, there’s at least three issues with that.
The first is that being a dick is already against the rules here. If the problem is that people are still being dicks, then the issue isn’t the rules, it’s lack of enforcement. Changing the rules in that case will not help.
The second is that any discussion where there are opposing viewpoints that people are emotionally invested in is going to get heated. Discussions involving politics, religion, morality, race, sex, etc, are more likely to have this happen.
The third is that being a dick is, to some degree, subjective. Anyone can take offence to anything, really. That’s one of the minor issues I noticed when rereading the FAQ.