Sure. But a lot of pro-GMO thinking is also quite glib ("we've modified crops for thousands of years so what's the problem?"). I think mostly what's behind ant

Sure. But a lot of pro-GMO thinking is also quite glib ("we've modified crops for thousands of years so what's the problem?"). I think mostly what's behind anti-GMO attitudes is the fear of unknown and unintended consequences. We've seen a lot of those ever since technology has been invented and they do seem to have proliferated in the last couple of centuries. So, it's not unjustified, especially when messing with extremely complex and barely understood systems. It's the same for weather engineering, for example. Parable of the sorcerer's apprentice and all that...