The USSR’s foreign policy in the post-Stalin period was one of supporting national liberation movements, especially in relation to the decolonial movements. This process often took on the form of forcing through bourgeois revolutions to proletarianize the peasantry and end feudal relations, thus moving the world closer to the global communism button. We can talk about the outcomes of this all day but it seems like settled fact that the developmentalist approach to nation building as best exemplified in Dengist China (and also this post) is a process of bourgeois-ification of the means of production. It’s been a long standing point of contention in communist theory whether it’s possible to skip developmental stages and - hypothetically - go from feudal relations directly to socialist ones, but historically MLs have sided on the answer that you must complete the loop and go through a bourgeois period before socialism can be achieved. Whether you think this is good or not is for you to hold in your heart but let’s be honest about theoretical traditions
But saying we do this because we love bourgeoisie revolutions is completely absurd. We don't like the capitalists being there, as it is a constant threat. It is a necessity though to begin development in economic areas that capitalists bring. The foreign capital brought into china since the deng era has been incredible, and the Communist party has allocated its distribution to greatly build up all areas of China's economy. It will be far easier to do planned economy if you already have every type of industry (hard, light, etc) instead of developing it like the Soviets.
The modern PRC is a product of the times, China had to compromise with international capital due to the rise of Neoliberalism and the downfall of the Soviet bloc. China would probably be still on the planned economic model if the Soviets had stuck to Gosplan and not had the Sino-Soviet split. But China needed economic partners and allies in order to match, and eventually surpass, the pace of the imperialist capitalist growth. China has taken the correct path though, and kept in charge the Communist Party, and kept the capitalists in check. A country that serves capital wouldn't so flippantly shoot billionaires for stepping out of line, as an example. China has outlined, and has diligently followed, its transition to a true socialist state. As well as a planned economy.
So what does your original complaint truly mean? The capitalist counter-revolution in China is being very well suppressed by the Communist Party, and the quality of life improvement is enshrined as the foremost goal of the State (one they have kept to very well). Marxists Leninists never loved capitalists, but have been the most effective in surpassing them, while making sure to maintain socialist dominance.