The attribution to Nin is disputed, but it fits in nicely with this passage from her diaries: “The artist is the only one who knows that the world is a subjective creation, that there is a choice to be made, a selection of elements. It is a materialization, an incarnation of his inner world.”
I think this is true, as far as it goes. What is there, if we filter out what our own brain brings to “reality”? Being generous, there’s a collection of quantum probabilities. It’s only our consciousness that makes a world of things out of this soup of possibilities.
But if it’s inaccurate to say that the world is an objective reality, neither can we go to the opposite extreme and say that there’s only subjectivity. Neither objectivity nor subjectivity has any meaning without the other. The greater truth lies beyond the duality of subject and object.