The problem with cottonseed oil is that it is a very unhealthy fat, GMO or not. Plus since cotton is grown as a non-food crop, heavy pesticides are used, so the oil has a lot of pesticide residue, as the oil is produced as a by-product. No sane person should eat anything with cottonseed oil in it. Even if one could find “organic” cottonseed oil, it still is one of the worst fats to ingest.
Actually, research shows that cottonseed oil is a little better than canola. I only use cottonseed oil for baking and frying. Have done for years. My family is exceptionally healthy. We grow cotton and it is not loaded with pesticide. Some years, some places there may be a need to spray for some outbreak but it is not done without careful evaluation. Too costly to waste on unneeded spraying. Cattle eat cottonseed and oil has many uses. It is safe and good and since we buy at our farmer’s owned cooperative, cheaper than other alternatives. I can link you to Cotton Incorporated which is the research arm for our industry. I love to grow cotton, watching it grow and harvesting. But the product is outstanding in fabric and for cattle feed and oilseed production. There is a non-gossypol seed that can be ground for meal but it isn’t widely grown at this point.
I did a quick search for cottonseed oil and there were articles positive and negative. I venture to say any other food would have similar results. I just say don’t knock it til you try it. It has done well for us.