Once you get your hands consistently on some real food, there is no going back, really. True quality, whether in turkey or t-shirts, always stands out and makes everything else pale in comparison.
I had the same experience in my life, twice: once when I moved to Europe and lived there for 8 years (and ate my way around some rural villages), and then (back in the USA) after going Primal, and both times I looked around after the epiphany and said the same thing as you: "people actually think THAT is food?!"
It is both a blessing and a curse to have taste buds that have been awakened, as you are noticing. The US has good food, too - the more we all support the real food wherever we meet it in the supply chain (from farm CSA through farmer's markets to various eateries and grocery stores selling real food), the better it will be for all concerned, and more folks will catch on - you did, no?
In the meantime, eat well (I am sure you will), share (knowledge and food) when it makes sense to, and perhaps eat a belly full of good food before you go to next Thanksgiving's meal so you can concentrate on the (hopefully) good company and less on the less-than-stellar dishes (I can relate - one of my aunts made the least-tasty Thanksgiving meal I have ever had...) because the company trumps the food quality on holidays like this IMHO.