openmathematical
The qubit case (dim ℋ = 2) is never addressed
Unified Principle: Quantum Gravity & Structural Stability — Book-wide
Original criticism
Now that the dim≥3 hypothesis is correctly stated (see the resolved Gleason item above), the two-dimensional case it excludes — ordinary qubits — is left with no derivation of the Born rule at all anywhere in the corpus.
Response & evidence
Not addressed. Logged as an open gap, not papered over with a claim the derivation "still basically works" at dim=2.