An anthropologist on Coursera mentioned that what is usually called Communism is too authoritarian in practice to be considered "true Communism" (that is, how the term is used in an anthropological context.)
The main issue I find with it is—maybe a bit meta—how the best idea (like, "maybe don't brutally and ruthlessly exploit people") or change in system will develop a sort of corrupting programme of its own—this doesn't mean "so don't do anything to change anything because nothing will change", but rather that I think we should be able to examine the mission drift in what became of Communism so as to avoid similar corruption of ideals.
Angie Speaks on YouTube I believe coined the phrase "social capital" to describe the liberal appropriation of social justice that depends on elite intersections of privilege to raise awareness and represent…which is great, I've learned plenty from those conversations, but by the nature of how those are set up (needs be popular) and the limits of them (concerned mostly with awareness, thought, and microaggression) it does not enact improvement on the lives of marginalized people in a material systematic sense.
This isn't directly about Communism in the 101 Basics sense, but I think something like that is what happened to the worst examples of Communism: Maybe it started out being for the empowerment of the people, but the need to accrue and then reserve power to get anything done became very attractive to harmful agents…whether that's social capital or capital capital, it was the attractiveness of power that everyone has but some people can't care if they wield harmfully as long as it keeps them on top.
So, I think the real 101 Basic is Eric Liu's lectures about civic power.
The TEDed version: https://www.youtube.com/watch?v=c_Eutci7ack
The pre-pandemic lecture version: https://www.youtube.com/watch?v=Cd0JH1AreDw
I hope this helps!