The entire first two paragraphs of your statement is exactly what the CCP and USSR attempted to set up but it failed miserably due to efficiency issues, They then consolidated in to sudo fascism. How many attempts do you need to see that people in aggregate cannot form that level of trust in society or social engagement? The majority of people do not even use their power in the current West because they do not care and are happy with the status quo.
Anarchism does not provide robust power to protect minorities so it does not matter if it does not allow discrimination, it cannot prevent it. The same level of educational and social change that you would propose under an anarchist system would solve it in any other system. There are no solid controls in place to counteract tribalism. This is actually one of my strongest held beliefs on the topic having worked in this area on the government and private sector sides.
The issue with not allowing dissent is that anarchists have never been able to force their system on society if it was not wrapped in communism. It very quickly collapses into an authoritarian regime or reversion to the status quo having hurt a lot of people in the revolution.
Don’t get me wrong, there are aspects of anarchism that do work within systems of power. Decentralization of power tends to provide a check on centralized power such as in a federal system. Private contracts (anarcho-capitalism) between people can be extremely efficient provided they are not the only form of sustenance for people. Rights backed by the higher power with no economic perverse incentives is an extremely effective form of equality and to a certain extent equity. Nonprofits provide an opportunity for people to actually support others and if we were all ready to be equal members in an anarchist society, it is all you would need and capitalism would not matter. You cannot claim that it is the owners of capital that are preventing it because they would be there in any other system, except with the power of the state or no state to stop them. If you solve them, you solve capitalism without any transition to a new system.
I talk this a lot with folks involved in higher education that conform to these ideals which is why I speak to your narratives instead of some bastardized version skewed by ignorance in a nationalist upbringing. People have not been taught what fascists, socialists, and/or anarchists actually believe so they have also forgotten the counter-narratives to them. They are susceptible to highly effective propaganda that works. Anarchists are tools used to degrade liberal democracies by fascist powers because it works. It is a playbook used countless times in the 20th century and forgotten because a liberal democracy won the so-called final war. Germany’s release of Lenin successfully knocked Russia out of the First World War and it is in Russia’s playbook right now to cause internal tensions in the West with political instability. A success on that front would not lead to a happy world but instead the next period of conflict and great power competition between totalitarian systems out of a wartime necessity just as in the great war.