It’s not splitting hairs, it’s literally the entire point of the discussion. I understand that you’ve had the idea that there’s some fundamental, qualitive, difference between the authoritarianism of Western counties and the authoritarianism of foreigners so deeply instilled in you that the idea of questioning it, or even having to justify it, is absurd to you. But the fact of the matter is that it is perfectly reasonable “legitimate conversation” to actually ask you to back up your claims, and you trying to assert that it’s just “obvious” that you’re right and if anyone tries to argue “you’re just done” just makes it clear that you’ve never actually examined why you hold these beliefs and you refuse to do so.
There’s a difference between the United States and Pol Pots Cambodia, and if you’re gonna try to argue that they’re the same then I’m done
You’re right, there is a difference: an order of magnitude more people have been killed and emiserated by the USA.