Memes

Comparing socialism to trickle-down economics is a false-equivalence. Trickle-down was a lie sold to the working class to justify lower taxes and safety nets, nothing trickles down. Socialist economies like the PRC, USSR, Cuba, Vietnam, Laos, DPRK, etc have had the opposite experience to varying degrees, an uplifting of the working class.

It is absolutely not a reasonable assessment of the USSR that relies on Stalin simply being "insane." He was paranoid towards his later years, sure, but he was never "insane." Further, Stalin was neither an absolute leader, nor was he a bad leader. The USSR was run collectively, from top to bottom, Stalin merely had the most individual influence. The structure of the USSR required lots of input from every part of the system. Further, under Stalin, life expectancy doubled, literacy rates tripled, healthcare and education was free and high quality, housing was cheap or even free, unemployment was practically 0, and the USSR went from feudalism to a developed economy that defeated the Nazis.

The idea of a "political class" is absurd. There were administrators and government officials, yes, but the top of soviet society was about ten times wealthier than the bottom. This numbers in the thousands to millions in Tsarism and capitalism. You have a fundamentally flawed view of socialism.

As for China, adopting market reforms does not mean transitioning to capitalism. They always had classes, even the DPRK has special economic zones like Rason that have limited private property. In China, the large firms and key industries are publicly owned, they have a socialist market economy and are in the primary stage of socialism.

All in all, you have a very liberal, western view of socialism and socialist history that does not correspond to material reality.