Within the hypothetical where the dimensions I suggest are better, fuzziness of upvote/downvote is better in the same way as uncertainty about facts is better than incorrect knowledge, even when the latter is easier to embrace than correct knowledge. In that hypothetical, moving from upvote/downvote to agree/disagree is a step in the wrong direction, even if the step in the right direction is too unwieldy to be worth making.
Within the hypothetical where the dimensions I suggest are better, fuzziness of upvote/downvote is better in the same way as uncertainty about facts is better than incorrect knowledge, even when the latter is easier to embrace than correct knowledge. In that hypothetical, moving from upvote/downvote to agree/disagree is a step in the wrong direction, even if the step in the right direction is too unwieldy to be worth making.