Hybridizing and selection are not the same as GM, as some of the comments have implied.
Much more field corn is GM than sweet, so some of the other comments are off.
In fact, I think very little sweet corn, when grown by market gardeners who aren't multi-million dollar businesses, is GM as I think there are still restrictions on buffer zones and having to plant non-GM corn next to them.
So, saying the sweet taste of some of the newer supersweet type varieties has anything to do with GM is almost exclusively not accurate.
These are two different subjects getting mixed together.
I personally like the su and se types of corn. I DO NOT want GM corn. My comment in an earlier post was about the four varieties that Seedway has in its catalog (mostly for bigger commercial growers, but not exclusively) that are GM varieties, but well camouflaged except from the very detailed reader who can put all the footnotes, astericks, etc. together to determine that the four are, indeed, GM. These are in a catalog that has, guessing, a couple hundred varieties of sweet corn total.
The devil is in the details, so let's not make huge generalizations if you aren't sure.
On the other hand, some solutions include buying your own seed from seed companies that state they will not willingly sell GM seeds. Or, by purchasing sweet corn (or other food products) locally where you can talk to the farmer and/or see where the food is being produced and see how it is being grown. Getting hysterical does nothing. Buying what you want may be the key to not encouraging the GM companies to keep putting out more and more GM stuff.
Of course, if GM products were required to be labeled as such, it might be easier. That must be taken up with your local, regional and federal elected officials! And they don't seem to be budging much!
Ann