I very much agree with what I see as your position here. The trouble with the point the OPs author makes is that there is an unquestionable theory of brain activity which is being battled against, let alone quantum mechanics and that can of worms (understood by very few).

While I understand on a philosophical level that such possibilities may exist, and that this may be the extent of the author's point, there are still unanswered questions. I had a dream last night, it was very realistic, how can I say my dream was unreal and that this waking reality is not unreal? Are both not equally real? Do we understand the differences between my brain experiencing the reality now (quantum or not) and my reality in last night's dream? Does an understanding of those differences negate the reality of the experience? Personally I cannot always tell the difference beyond the continuity of my waking memories of my life. And how may I say my dream self does not have such continuity? (again a vague proposition, such as the author provides, not that I disagree with the author's assessments)

Again, I do agree that any such answer will provide no truism but rather a frame of reference for practical usability. Much in the sense Hixidom is referring to. While it is admitted that Maxwell's equations may not be realistic in all senses, the equations are very useful for most practical applications. I don't see a need to negate any such views due to this situation, but personally I always take things with a grain of salt so the author's point is not lost on me but rather known via uncertainty (Godel is always a nice read). Reality is quite an elusive system at the moment.Which is fine with me  I have other thoughts but a movie to go to 8)

Thanks for the thoughtful posts