This is definitely a more biased view towards the use of GMO foods, from the standpoint that there really is no cons. I'm not sure I entirely agree with this but I think it's important we research different points of views. Educating ourselves is key and people who hold strong opinions towards the matter may make key points.
I agree, I think what's most important is to weigh out the costs and benefits. It's obvious that many of the uses of genetic engineering are helpful for agriculture and so forth, but we need to educate ourselves on wether these food producers are doing this mainly for economic benefit, or with intentions that can have a positive effect on the greater good. It's all about knowing where your products come from, and what they contain.