I think the more charitable interpretation of this defense is:
Ads tell people about conditions they might have, but not realize there is an available drug that can treat it. Or at least an encouragement to talk to their doctor about it.
I think a lot of these ads prod hypochondriacs to rush to their doctor (or perhaps even the ER) to "tell them about their symptoms" which just drives up costs for everyone.
Au contraire, people will live with all sorts of debilitating conditions, assuming that treatment is exceptionally hard.
I lived with an impacted wisdom tooth for a long time, and when it was removed I suddenly realized that it wasn't just a natural way for my body to feel.
I also just assumed that I had to poop explosively in the morning just because, and not because I drank the large cup of milk my mother gave me.
And that's normal. Loads of people are like this.