Wow. Did you read that out of a Monsanto advertisement? That is a specious claim at best.
Look, I dislike greenie anticapitalist hippies as much as the next guy, but once in a blue moon they are right. And I'd rather not eat food that has had its genetic structure interfered with by short-sighted experimenters. I have no problem with natural hybridization, but splicing in genetic parts from foreign organisms is the biological equivalent of saying, "hold my beer and watch me do something really cool!" Nobody knows what genetic repercussions will manifest over the next 20-100 generations of these plants and how it might spread to similar plants, which could touch off other unforseen repercussions.
I'm sure it concerns you, but really that argument is the same one that greenies use against all technology, "Who knows what might happen?" Actually there is a vast knowledge base on plant genetics and there are no "mysteries" about genetic modification. It's far more likely that some dangerous plant mutation could pop in the wild from the trillions of genetic mutations that occur around the world every day from cosmic ray particles streaming in from outer space.