What a painting "means" is useless and has likely always been so.
The new freedom will be to own our own experience of what is being viewed. The notion that anyone can "know" what the artist intended is preposterous. All the knowledge in the world about what was in the artist's mind can never get you inside the artists head.
My own paintings have never been about what I had to say or what I was trying to communicate
-they have always been about the viewer having their own experience-whatever that might be---and owning that experience.