I only deny that they can effectively blacklist within this system short of a ban.
They can blacklist, because they can effectively force users to not use anonymity.
I disagree, unless you are saying that that by controlling mining they can refuse to include anonymous transactions. My opinion is that is effectively a ban. I would likewise make the same comment about forcing people to give up passwords and such.
Those sorts of draconian measures
may work, or they may not, but I see little point in discussing them with no real information, or lacking a complete analysis of the relevant scenarios. Again this comes down to "there might be a flaw" (The Ban Flaw).
I have stated that several times. I feel like you are arguing disingenuously. I refuted your point about them needing to do it before coins have already been mixed, because:
1. There are always new coins from mining.
I don't see the relevance of new coins. How does that work?