Socialist countries have a really bad track record of human rights abuses and a strange set of failings that are either specific to them or unusually prominent compared to the general zeitgeist, so you can draw decent conclusions like “don’t break systems a lot of people depend on, just cuz” and “freedom of press is actually really important” and “science shouldn’t be controlled by the state’s ideology ever”

instead people realize that Marx was wrong about something and the Soviet Union killed people and then go become tankies but for capitalism