Buy one anyway. Unless Doctors train or workout, most probably don't know the ins and outs of different powders or usage.
Ask a doctor what Creatine is, he'll tell you. Ask him how you use it, chances are 80% or more won't know. It's not on the med school testing. Doctors need to know about importent things like Disease, injury, treatment methods etc.
They may know effects of things like excess protein, Creatine etc consumption, but supplements of type are not generally espoused modalities for any ailment, malady or condition. I mean logically if you get ill would a Doctor normally advise Whey protein, Creatine, HMB etc? Nope. It's things like NSAIDS, Steroids, Antibiotics etc.
Whey protein is natural, as Whey is in Cheese. Yes it's slightly synthetic as it's coming in a form not usual, but it's not chemical, so it's not completely synthetic, or derived fron unnatural content.
The same could be said about Powdered soup, as opposed to soups already in liquid state or Cream based, but would Doctors seriously advise against Powdered soup, or Instant Mashed Potato. I doubt it, except for possibly the Chemicals or E-numbers, or if they contained anything like High Fructose Corn Syrup for example. I suspect many would likely say, if you're concerned don't consume them, but most probably wouldn't have serious, serious misgivings, not to the same extent as they would, if you had a slight Heart problem and wondered if Caffeinated Energy drinks were okay.
They're not by the way. Not for people with Heart problems, (Caffeine's a Heart stimulent).
Some protein powders are hyped yes, but they're usually the expensive ones, claimed to give you massive pumps, faster gains, but in reality they don't give you end results, someone can't get on a cheaper powder, with about 2-5 ingredients in them.
As for protein supplements being inflated, I don't know what that implies, unless he meant inflated in price, which yes ones with about 15 or more ingredients always are, redgardless of whether the quantities are good enough or not.