Thanks, this was an awful skim. It feels like she doesn't understand why we expect gravity to propagate like a wave at the speed of light; it's not just an assumption of Einstein but has its own independent measurement and corroboration. Also, the focus on geometry feels anachronistic; a century ago she could have proposed a geometric explanation for why nuclei stay bound together and completely overlooked gluons. To be fair, she also cites GRW but I guess she doesn't know that GRW can't be made relativistic. Maybe she chose GRW because it's not yet falsified rather than for its potential to explain (relativistic) gravity. The point at which I get off the train is a meme that sounds like a Weinstein whistle:

What I am assuming here is then that in the to-be-found underlying theory, geometry carries the same information as the particles because they are the same. Gravity is in this sense fundamentally different from the other interactions: The electromagnetic interaction, for example, does not carry any information about the mass of the particles. … Concretely, I will take this idea to imply that we have a fundamental quantum theory in which particles and their geometry are one and the same quantum state.

To channel dril a bit: there's no inherent geometry to spacetime, you fool. You trusted your eyeballs too much. Your brain evolved to map 2D and 3D so you stuck yourself into a little Euclidean video game like Decartes reading his own books. We observe experimental data that agrees with the presumption of 3D space. We already know that time is perceptual and that experimentally both SR and GR are required to navigate spacetime; why should space not be perceptual? On these grounds, even fucking MOND has a better basis than Geometric Unity, because MOND won't flip out if reality is not 3D but 3.0000000000009095…D while Weinstein can't explain anything that isn't based on a Rubik's-cube symmetry metaphor.

She doesn't even mention dark matter. What a sad pile of slop. At least I learned the word for goldstinos while grabbing bluelinks.