Chidi,
Tremendous essay, I believe much undervalued. Not just from the good clear writing style and organization, but way ahead of that for your conceptual analysis and proposition.
I came to; "The idea again is that spacetime (simultaneity or equality by any name) is simply the uncertainty or cut-off i.e. the observer per se and which observer per se as the phase-space is a non-trivial attribute..." and then smiled when I read; "...This may sound like a wild claim." No Chidi, not to me. You have just described a completely original view of a 'discrete field' model, (DFM) where not only each 'observer' but all inertial system of matter particles instantaneously localise light speed to their own c, conserving Snell's Law.
We must think similarly. I also discuss Godel, Huygens, psi, uncertainty etc. and define detection and observation. Having studied quantum optics I take a more practical mechanistic approach and show how a thesis founded (loosely perhaps) on your own has the power to resolve the Bell inequalities EPR paradox without FTL and spookyness.
The part closer to your own is better covered in my previous two essays (both Community 7th but passed over.) I hope to do better this year with important findings. I think my model proves your concept mechanistically, and included deriving curved space-time last year. That may sound like a very wild claim!, and you'll see I don't shy from other departures from common assumptions. I do hope you can read (and score!) mine soon and greatly look forward to your thoughts.
Yours has certainly earned a well deserved 10 score from me, with no 'allowance' needed for not being a 'professional' physicist. I have lots of qualifications but none mean anything more than my primary education and later work and research. You 'are' a physicist and an exceptional conceptual thinker. Those are the skills we need to extract us from this dark labyrinthine 'rut'. Congratulations on your work.
And sincerest best wishes in the competition.
Peter