Organic products use pesticides, it's just that they often use older pesticide technologies or supplement the use of pesticides with other techniques for repelling pests. Most organic pesticides are no more healthy nor environmentally friendly than modern synthetic pesticides (maybe this wasn't true when DDT was popular, but these days it is).
Knowingly putting pesticides in your body never seems rational to me, even if it saves some money. But if they were going to do that anyway, then sure, your point stands.