I disagree here and I don't think it's a point we'll agree on.
Sometimes the label matches. There have been 4 people in high GOP positions who have sieg heiled. They aren't being labeled Nazis, they are objectively and factually Nazis. Germany's crackdown on the AFD is a response to power seizures/white supremacy in America. The GOP strategy writers literally wrote "there will be a revolution and it will be bloodless if the left allows it to be." There has very much been a declaration of "us or them", and that's not the type of thing that can be tolerated. You can't say "yes we'll work together with people who have said it's us or them."
Likewise your argument becomes a defense for pervasive systemic corruption, because the defense is no longer "we aren't corrupt," but "they're attacking us because we're the opposition, this is a power grab."
The gridlock that is a direct result of lack of corruption enforcement "because that would be a political power grab" became the mandate to overthrow the old establishment/ignore the constitution. What is happening in America right now is most influenced of all people by Merrick Garland who failed to prosecute a criminal because he was worried about enforcing the law against politicians which turns the justice system into a political weapon.
Unfortunately a weapon is just a weapon, it is a completely amoral object that amplifies the morality of it's wielder. Police officers carry weapons. It is not the weapon or that a weapon was used, but what the weapon is used to achieve that is worth analyzing.
That's the problem with side-ism, it implies that there are two equal sides with equal legitimacy and equal ability with equal strategies.
Game theory is deeply relevant, because on the two ends of the political spectrum are the cooperators (liberals) and people who think they should defect if they are able to win by doing so (conservatives). Conservatives don't cooperate when they should, and liberals don't defect when they should, and that's how those ideologies largely fail. Conservatives end up power grabbing (which is what I believe you're largely speaking in reference to) and creating dictatorship, while liberals fail to power grab and create dictatorship by ceding power.