YABU. Advertising does virtually nothing to inform you about a product; but it does do everything it can to make you "brand aware".
As someone has already pointed out, what has advertising done to "inform" you about the differing constituitive elements of washing powder? Or the differing qualities of cars?
Or do you want the same kind of bogus-science, "here comes the sciencey part" shite that comes with the beauty industry - "wrinkles appear plumped out" ...?
For the poster who argued against "censorship": what's being censored? Formula is still available; plus it is advertised after 6m. Just out of interest: would you bring back cigarette advertising?
Finally, even if advertising were an effective way of "informing" people, which, I repeat, it is not (since it is about brand awareness), how would if work to inform you vis-a-vis competing products? Thankfully, in the UK we don't have comparative advertising (as they do in the US, for example), so X formula wouldn't be able to compare itself directly or qualitatively with another formula, so you'd not really be any better off, comparison-wise.
As far as I can tell, it becomes an issue of trial and error and finding the formula that your baby likes best, should s/he not get on with the first one.