That kind of unqualified/unjustified claim is misinformation designed to generate an emotional reaction, not rational analysis.
Nature often produces very dangerous on it's own. It doesn't always take that long. For example, Tifton 85, a hybrid of bermudagrass created using traditional cross pollination methods, has the unfortunate property of producing cyanide in some soils[1].
Testing is important regardless of the techniques used to create a new species. Focusing on species created using modern techniques improperly ignores the numerous older methods that are just as dangerous (and often harder to predict).
That kind of unqualified/unjustified claim is misinformation designed to generate an emotional reaction, not rational analysis.
Nature often produces very dangerous on it's own. It doesn't always take that long. For example, Tifton 85, a hybrid of bermudagrass created using traditional cross pollination methods, has the unfortunate property of producing cyanide in some soils[1].
Testing is important regardless of the techniques used to create a new species. Focusing on species created using modern techniques improperly ignores the numerous older methods that are just as dangerous (and often harder to predict).
[1] https://www.wired.com/2012/06/cyanide-and-poisoned-cows/