I highly recommend watching this debate (I use the term very loosely here) between Weinstein and Sean Carroll - and particularly this exchange about 37 minutes in:
https://youtu.be/5m7LnLgvMnM?&t=2269Carroll basically reads off two sections from Weinstein's paper [1] and points out that the reason the physics community isn't paying attention to it is because it's not a serious paper worthy of most working physicists' time. In fact, Weinstein even goes out of his way to actively discourage rigorous consideration of his paper:
On the first page:
> The Author is not a physicist and is no longer an active academician, but is an Entertainer and host of The Portal podcast. This work of entertainment is a draft of work in progress which is the property of the author and thus may not be built upon, renamed, or profited from without express permission of the author.
And again on the "Notes on the present draft document" section:
> As such this document is an attempt to begin recovering a rather more complete theory which is at this point only partially remembered and stiched together from old computer files, notebooks, recordings and the like dating back as far as 1983-4 when the author began the present line of investigation. This is the first time the author has attempted to assemble the major components of the story and has discovered in the process how much variation there has been across matters of notation, convention, and methodology. Every effort has been made to standardize notation but what you are reading is stitched together from entirely heterogeneous sources and inaccuracies and discrepancies are regularly encountered as well as missing components when old work is located.
> The author notes many academicians find this unprofessional and therefore irritating. This is quite literally unprofessional as the author is not employed within the profession and has not worked professionally on such material since the fall of 1994. If you find this disagreeable, please feel free to take your professional assumptions elsewhere. This document comes from a context totally different from the world of grants, citations, research metrics, lectures, awards and positions. In fact, the author claims that if there is any merit to be found here, it is unlikely that it could be worked out in such a context due to the author’s direct experience of the political economy of modern academic research.
This work stands apart from that context and does so proudly, intentionally, and without apology.
And then upon having these sections from his own paper read out loud to him, Weinstein says "how dare you" and basically flies off the handle resorting to personal attacks on Carroll. It's absolutely wild. I am not qualified to assess Geometric Unity or theories of everything, but it is clear from this exchange that Weinstein is a grifter with delusions of grandeur and a persecution complex.
[1] https://saismaran.org/geometricunity.pdf