Professionally from a physicist, I expect nothing more. It's all good and ok by me and it's factual. Nothing indicates the squishy warm environment of mammal and yeah, bird brains to have anything to do with a primary force of gravity. Happily conceded and no no problems with the standard, normal, view. Eventually, maybe a very long time from now, new discoveries will be made by improved instruments that will confirm, challenge, or upend the current models of the universe, and perhaps even open up new insights. That day is not today. But there is always room for improvement, in people and systems.
One such improvement in our understanding I am believing is this work by the Author, and his colleagues which at some future point have impact.
Call it a guess, and dismiss as desired, NP.