Speaking as someone who has had a lot of experience talking with doctors in poorly-understood clinical situations over the years, most doctors display a need to

Speaking as someone who has had a lot of experience talking with doctors in poorly-understood clinical situations over the years, most doctors display a need to establish informational authority over their patients. So if the "dumb guy" take is "just expose the kids, they'll adapt to it", in the absence of hard evidence to the contrary (and maybe even with it) the average doctor is going to _reflexively_ take the opposite position, because that shows that you (or the conventional wisdom) were wrong. There are exceptions, and they are either the ones that just don't care at all, or they're the best docs you'll ever find.