Your outline of the thought process behind Mikey7 downvotes is a lucid, intelligent argument with his belief about "the market." And you're saying this is the reason you vote to have him silenced?
I kind of think maybe a better reason might be because a commenter engages in trolling or some other behavior that's out of bounds, which might very well be the case here with Mikey7. But I appreciate having this thought process behind downvotes as they are actually used ("I disagree with what you say ... Downvote for you!") so clearly stated.
If you think "You are making wild and horrible claims without any substantiating evidence" is the same thing as "I disagree with you," I don't know what to say but that you're wrong. My objection is that he appears to be mindlessly spouting dogma, and a dangerous one at that. If he made a cogent argument that disagreed with my beliefs, that would be one thing, but his comments are the libertarian equivalent of "God made Adam and Eve, not Adam and Steve."