Write4U;
My understanding is, it’s not the eye, it’s not the existence of a being that can observe, it’s the measuring device. The things being measured are so sensitive to anything trying to measure it, that the introduction of those devices throws off the result. In other words, we can’t know what’s going on in those tiny particles because when we measure them, it changes what’s going on.
So, it’s pretty much regular Newtonian physics causing this.