The basic thinking behind the opposition to GMO crops is that Genetic manipulation is dangerous because we don’t know what all the consequences will be. As this article points out, it that’s the issue, then we are In REAL trouble.
I’m not a biologist, but even a light reading of some bio stuff sort of tell you that genes are remarkably fungible. I think that this is life’s protection against a dangerous universe. And it’s worked for billions of years. Blending genes to get desired traits is just another way that human being using nature to improve our lives.