There can be a balance. One could introduce more mixing while still relying primarily on the current metrics. It's not a binary choice between one or the other.
I don't fundamentally disagree with you, but I note that when you say "small bias," you're acknowledging that there is a continuum between total neutrality and total bias.
I don't see how you arrived at the conclusion that the cardinality of biases is greater than the cardinality of natural numbers from the proposition(s) of the post you replied to. If that was the intent of your post, please elaborate.