The CCP treatment of the Uighur is unequivocally a genocide. They are not pre-genocide anything.
It gets harder and harder to take this kind of rhetorics seriously these days, especially the last few years - everyone labels everyone else they don't like as "nazis".
This is borderline Nazi apologizm. They recycled people into furniture, butchered millions based on genetics alone.
I honestly couldn't care less for that westsplaining about China (or any other culture European civilization considers foreign), especially after seeing how does the receiving end of some darker western politics looks like.
Honestly, that xenophobic supremacism is so tiresome. Being an outside observer I hardly see white European descendants doing too much better. What I do see is extreme circejeeking, projections and boring 2 minutes hate at every other corner, while having disappointingly little substance to show for, when you visit and check out their way of living personally.
Second: I don't give a shit what the west did in its past or how anyone is ignoring that. It doesn't change the basic realities of how the Chinese state, now, today, treats a certain minority in its borders (and outside them too) and how it controls the rest of its population. The history of the west is irrelevant in the context of condemning a current repression and to say that this repression shouldn't be called out because of some past event by another culture to which someone belongs is ridiculous.
As for "westplaining" what the hell are you even talking about? What a cheap label for shutting down legitimate arguments about specific real events happening now that fully deserve condemnation.
If you feel like the matter of "a certain minority" in China is any way relevant to what Nazis did, then maybe you wasted your time at school and should open up a history book and look up what exactly was the context of what Nazi were doing to Jewish and Romani people.
As distasteful as China's actions might seem to be, their end goal is assimilation, unlike Nazi's goals of isolation and physical extermination - I'll refer you to the fate of "The Association of German National Jews" on this one.
Westsplaining is just a phenomenon of certain people rationalizing their own xenophobia without actually caring about the principles they talk about so much when trying to take some moral highground. Which is why the "history" (as if it happened too long ago or seized to be the case now, yeah, right) of western civilization dealing with similar issues is "irrelevant". This term should be in the "see also" section under "looking at the speck of sawdust in your brother’s eye and paying no attention to the plank in your own eye".
You can condemn all you want, but I don't personally see why objectively China should deserve to be treated any worse than say United States, that had fared far worse in similar situations, like it's reaction to 9/11 with torching a whole other fucking side of the planet, or it's ICE detention camps - the last one being actually much closer to Nazi isolation policies than China's assimilation policy of Wahhabism-leaning minorities.
Unequivocally yes, it absolutely is a fascist police state by any definition of the notion, even when compared to other notoriously authoritarian states. Sure, many countries have their flaws and legal quirks, but to claim legal ambiguity about the status of China despite absolute mountains of evidence to the contrary on all kinds of scales is either a case of utter ignorance or flagrant dishonesty.
China is the 21st century's closest example of a pre-genocide Nazi-type state in the sense of it being an economically successful major power with plenty of international influence while blatantly repressing millions of people based on their ethnicity or religious affiliation, while also obliging the rest of its population into a constant state of Gleichschaltung, or roughly, "coordination" as the Nazis called their version of it.