What you have stated principally does not contradict what I have stated. I respect Sartre a lot. You may have read his plays and you would agree with me that they are highly thought provoking. His play named - FURIES- in particular is an outstanding master piece. His ideas on individualism and his particular way of describing existentialism are quite astounding - of course, he never termed his own ideas as existentialism, but nevertheless his ideas have been categorised as existentialism by the philosophical community.
Still, towards his end of life he was quite disillusioned with Socialism.
If you read my posting above you would clearly understand that my views are that Communism or Socialism is a natural outcome in an improperly run society - you are watching it occurring in Venezuela. But I am also firm in my conviction that Communism does not have an answer to the problem. They come down with lots of fanfare resulting in purges and instability, but with no positive outcome. See what happened in Cuba - the same Castro who spoke so much about freedom and equality has delivered neither. No communist country ever allows individual thought process so necessary for a free mind to exist - the thought processes are controlled by propaganda and mind control. See for yourself the state Cuba is in now - the populace languishing and impoverished.
Che Guevara was conveniently sent off by Castro because he was a threat to Castro.