Well, Nima has shown that space-time is emergent from higher geometry like he amplituhedron and is not the fundamental basis of reality. Then Hoffman suggests that conscious agents could plausibly be the substrate through his category theoretic work. It's not a misunderstanding of the double slit experiment. (I think that was a talking point for a long time amongst hippies.) The interpretation that wave function collapse requires a conscious agent would be consistent with this idea though, and also consistent with simulation theory.