Mesilas Yesharim defines kanoi. A kanoi isn’t someone with anger issues who bashes people as a way of getting out his anger. A kanoi is someone who loves Hashem and therefore is offended by breaches in Hashem’s honor. Big difference. According to the book “In Their Shadow” by Shlomo Lorincz, the Chazon ish referred to the Neturei karta as “Yidden from before Mattan Torah”, meaning their kinah wasn’t related to the Torah. That is how they were able to hug anti-Semites generations later. The Brisker Rav, the supreme Torah-based kanoi, refused to attend most demonstrations as they were filled with the wrong kind of kanoim. The Brisker Rav (who used to care for mamzer orphans left on his doorstep) and the Chazon Ish (also known for his tremendous chessed and ahavas yisroel) were the right kind of kanoim, which wasn’t sinah but a milchama for Hashem’s honor. It’s better to be known as an eved Hashem than a kanoi. Negative middos like kanois are very dangerous and should only be used by those who can counteract it with Ahavas Hashem and Ahavas habriyos, like Pinchos, the Chazon Ish, and the Brisker Rov.
I once heard a cute vort from Rabbi Berel Wein on a tape, quoting some Rebbe:
Why is Chukas-Balak a double parsha and Mattos-Maasei a double parsha but Pinchas stands by itself? Because nobody wants to be mishtatef with a kanoi!
(I would have said it’s because Pinchos has 167 pesukim, the second-largest Parsha in the torah by pesukim, but that’s why I’m a litvak).