overall I think that GMO food is safe.
So you, and other scientists, don't "know", as TFA suggests. I'm not trying to troll, but a majority of scientists having the same general feeling on the topic doesn't ammount to settled science. Relativity is settled science -- it, or at least major aspects of it, can and have been proven. The same cannot be said for some of the topics cited.
To be fair, TFA actually refers to an "opinion gap" rather than referring to "what scientists know".