Sorry, I thought the video made that clear. What is now thought is not an answer, but a perspective on the question. That the way to resolve the paradoxes between quantum mechanics and general relativity is not to find a quantum mechanical theory of gravity, but that both quantum mechanics and spacetime must emerge together from something more fundamental. In this sense, it is now thought that spacetime is not absolute. This sentiment appears widespread in the physics community, but as to precisely what this more fundamental theory should be, that answer has not yet been found.