evidence of ideological impurity!
It doesn't matter if the cat is black or white, so long as it catches mice.
"Ideological purity" first off, isn't really a thing in Marxism-Leninism, because Marxism-Leninism explicitly calls for adapting policies to specific material conditions. To the extent that people have tried to pursue an "ideologically pure" version of it, it generally hasn't worked so well. The Great Leap Forward, for example.
Now, one would think that China learning from its past mistakes and adapting policy in such a way that 700 million people get lifted out of extreme poverty would be seen as a good thing. And one would think that if someone didn't see this move as a good thing, then they must prefer China's pre-reform policies when they didn't have billionaires and a stock market. Yet somehow, y'all seem to just blindly hate China regardless of what kind of policy they implement.
It kinda seems like what we are dealing with is an anticommunist ideological framework that can transform any data about existing communist societies into hostile evidence, a nonfalsifiable orthodoxy, so assiduously marketed by the ruling interests that it affected people across the entire political spectrum.