It is, in my opinion, precisely the forcing of everything and everyone into an artificial semblance, not only of equality-in-principle, but equality-in-practice, or more accurately identicality, which has been and remains the source of a lot of our present problems. Why? Because it is counter to observed reality, and tends toward authoritarianism, or worse.
All men are indeed created equal; that is, all human souls are of equal worth in the eyes of God, but not all are equal, by any means, in a material or pragmatic sense, in this world; still less are they identical. And this is true of the products of human endeavor, no less than of humans ourselves.
By pretending that everything and everyone is of equal worth, we have given up the ability – or at least the willingness – to practice discrimination in the classical sense: that is, discernment, the considering of people and things on their merits.
And the effort to hammer every peg, whether square or otherwise, into the same round hole, is the root of totalitarian oppression. Enforced equality ends in despotism.