Yeah, the term "Frankenfood" was coined because of Roundup and not to invoke irrational fears about the genetic makeup of the tomato somebody might bite into. Riiiiiight!!!
BTW, Roundup is an herbicide. The difference between herbicide and pesticide is similar to the difference between a lion and a vegan.
There are many aspects of GMO crops. Some is to make them Roundup resistant by splicing in genes from other plants that are naturally roundup resistant. Some are to splice in genes from plants that excrete chemicals that repel pests so that farmers can use lower quantities of pesticides. Some are to increase the nutritional value of foods like adding beta-carotene to rice for use in areas where adequate nutrition is not guaranteed. I've not heard of a case of a genetic modification happening to be able to use more pesticide. Why would it? Pesticides don't affect plants.