If GMOs are healthy, why aren’t its proponents (Biotech and Big Food) excited about labeling it?

If GMOs are healthy, why aren’t its proponents (Biotech and Big Food) excited about labeling it?

‘Proponents of genetically modified food say that a “GMO” label on foods would mislead people into believing that they are unhealthy or unsafe. Why is that? Are they unhealthy or unsafe?! Proponents of GMO food (investors and manufacturers) have spent millions and millions of dollars to keep them unlabeled, in several states across the US, in an effort to disguise foods that contain herbicide and insecticide as being “the same” as all other food, when they certainly are not.’
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