With the same logic you can say that contraceptives are not the answer because they aren't 100% effective.
Of cause IAC is mis-sold like anything new. It's not the end of all your problems. But as someone who's had to deal with the opposite too, infrastructure-as-a-weird-mystery-that-accidentally-happened-over-20-years-and-only-long-bearded-john-knows, IAC is fantastic.