I think bogus is talking about this passage:

If the probability calculus of quantum mechanics can be obtained from conventional probability theory applied to these "structures" that may underlie familiar space-time, then that would mean that superposition does not need to be regarded as ontological.

which seems to be suggesting that the approach may eventually solve the puzzle of Born probabilities. I agree with you that it would have been nice to have this at the top of the post, if it's supposed to be the main point.