There is some honesty with this argument. You can admit that your own bias overrides your ability to be impartial. The dishonest bit is that by attempting to refute a premise of impartiality, you're really making a case for the dominance of your personal bias against impartially. It's a posture that seeks a win condition in the form of a society that has abandoned impartiality, and with it ideas of justice, democracy, self rule, scientific progress (basically everything that depends on the pursuit of impartiality).

Your siren's song to a new and better dark age, isn't as appealing as you think it is. Get psychological help.