I originally came out of exercise and sports science.That seems to be another case of "hammer syndrome": When your favorite tool is an hammer, everything looks like a nail.
So to come up on a population were exercise did not seem to cure everything that was wrong with them, was antithetical to my beliefs at that time.
I guess there are a lot examples out there, were people wrongly think they have found one hammer to solve all problems. Some examples (some taken straight out of my QDC) where a (more or sometimes less) legitimate diagnoses in one sub-field is used as an "solve it all hammer":
- It's lack of exercise ("Common sense! Duh!")
- It's the psyche (Psychologists and Psychiatrists, but everybody else as well)
- It's the bones (Chiropractors, Osteopaths)
- It's meat (Vegans, "nutritionists", and other puritanic upholders of moral standards)
- It's Candida, Lyme or other pathogens (Pathogen quacks)
- It's heavy metals, pesticides or other unnamed "toxins" (Environmental quacks)
- It's neuro-transmitters, inflammation, free radicals or the mitochondria (Pseudo-biomed quacks)
- It's the thyroid, adrenals or other endocrine problems (Pseudo-endocrinologists)
- It's some idealistic/metaphysical woo like "energy", qi, "balance" (Alternative medicine legerdemain)
So my advise would be: If someone wants to use an hammer on you, stay away from that person (unless you are actually a nail).
And just to be clear: I think Prof. Snell is a trustworthy as he relinquished his "hammer" – his lecture is very much recommendable.