Objectivist ontology claims that everything is what it is ("A=A") independent of human perception. Humanity does not create reality
Quantum mechanics (specifically, Heisenberg's Uncertainty Principle) implies that what is independent of human perception ("things in themselves" according to Kant) is irrelevant, because we cannot perceive them to perfect accuracy. We cannot be sure of exact positions and velocities, so they are irrelevant to our perceptions-what really matters are the perceptions ourselves, and thus reality does not exist independent of human perception, or at least it is impossible to interpret it exactly as thus.
I suggest reading "Physics and Philosophy" by Werner Heisenberg