By the same logic, it's also not true that NATO is an anti-Russia alliance, given that, until relatively recently they were fine with Russia. In particular, they even controlled Russia in the 90s, and were fine exploiting Russia as their neo-colony with as little disturbance as possible until 2022.

Just look how divided they are when discussing the car tariffs

Do you call this 'divided'? 10 in favour, 5 against, with the only prominent member of NATO voting against being Germany.

Traditionally, they make a lot of noise about being anti-China and pro-human rights while doing fuckall from the perspective of actually anti-China countries like Japan and the ROK

Except for attempting to dismantle the PRC's access to a market that is important to the PRC and preventing the PRC from destroying NATO's manufacturers while Japan and the RoK keep doing what, exactly?

Of course, when push comes to shove, they'll do as they're told in the end

Meaning that they are in an anti-PRC alliance, contrary to your prior claims.

They simply made the correct assessment that the US cared more about the Soviet Union than China

And the evidence for the correctness of that assessment is what, exactly?
Also, how does it follow from that assessment that the PRC should have sabotaged both the USSR and other countries anti-colonial struggles?

Meanwhile, China then was poor as fuck with a GDR per capita lower than most African countries

Yes, that's kind of an expected consequence of decades of warfare, genocide, and victimisation by colonialism.
Notably, the PRC sabotaged other countries struggle against colonialism and genocide. Not sure how that was supposed to help the PRC with the problem you just outlined.