So first, this retort is vacuous because the whole point of Thiel's supposition is that the dimensions are not orthogonal. The meaning of the quote is that he is willing to move right on others (political structure, social issues, surveillance state, etc) to be able to move right on another (economic policy).

But even putting that aside, on which dimension is Thiel not on the far-right? He's hardcore capitalist who supports (self-described!) monopolist policies; he sits on the board of a public surveillance company and is the chairman of a second military-industrial one; he published a book in which he called a substantial portion of rape victims liars; and we're talking about him getting an appointment in a right-wing movement in the federal government.