"...The concern with transgenic plants is that biochemical novelty could sometimes alter biosynthetic pathways and cause a plant to produce bioactive compounds at new high levels, or produce completely new toxic compounds.
Thus, even ecologically safe plants could in theory present food safety problems and require appropriate caution..."
"It wouldn't make much sense to say one is willing to eat corn and potatoes, but not corn with potato aspects" Evil Warlord
No, that's not an oversimplification, it is just wrong. As pointed out above with pleiotropy. Just because one combination is safe, doesn't mean a different arrangement of the same material is safe. You can drink h2o, but not h2o2.