Earlier quoted context omitted.
An ad is never helpful because ads are designed to mislead me into buying something I didn't need or knew about before I saw the ad. If nothing else, an ad cannot impartially compare a product with the competition (and sometimes the "competition" is buying nothing at all), therefore every ad lies. If I already needed or knew about it, I didn't need the ad. If I was happy with my life without the product advertised, I…
I saw an add for a medicine that was new on the market and my friend who could use the meds, was unaware of its existence. Now, after a doctor’s involvement, my friend is on the new med and it treats their condition better and the quality of their life is improved.
If so, I'm not so sure it is advertising, as being discussed here, that you're referring to.
If not, funny coincidence.