My turn. This thread has morphed(no surprise) into some kind of validation of one of our medical professionals.
My experience as with many others I'm aware of is that without Dr Bruce, I would not be flying, or only be flying LSA. As far as his personal style, I don't know if there is some kind of elevated standards for someone with an MD, PhD that they aren't allowed to express an opinion on various topics, med related or otherwise. We get fussy, we get irritated, we have ideas, we see that things are going pear shaped and often want to expand on the situation or maybe offer a personal opinion just like anyone else. Maybe it's not mainstream, or maybe it's not popular but that doesn't lessen the value of the contribution to the flying community.
The fact is, the aeromedical branch of the FAA trusts Dr Bruce, and they respect his position and advocacy, and that's all a pilot with a medical condition needs to know. As far as payment, the cost of his services are a drop in the bucket compared to the totality of what you are going to spend in GA over the years, so write the damn check and be happy when the cert shows up in the mail. Or - don't, and STFU.