thx for explanation! is there any evidence backing the statements of HF21 up? or is it just a lets see thing?

to have many but small votes and being under 20 Steem does not mean that the content is bad... Actually, it means that an organic/majority decision has happened, indicating good content. The definition of good content is not subjective it is content maximizing organic interaction. This is how all social media except steemit work.

Where does the magic happen? 50/50 means higher profitability of self-votes, higher profitability of coordinated status quo circles. How becomes a byzantine participant good?

Downvotes are no argument because isnt it some prisoners-dilemma type thing where nash-equilibrium is that nobody is doing anything? Nobody throws nuclear weapons at stronger or equal strong super-powers, they are made for not being used. A flag would lead to a counter-flag. The biggest self voters and abusers wouldn't be flagged at all. I really want to understand it, Is there any paper?

I get the point that it would work if and only if all the good users would coordinate their attacks, but since you can't be sure that you are not alone flagging --> so nobody would do the first step :/