Asian restaurants in the US cater to what they the think the US public wants to consume and not what is "authentic" to their cuisine. While which probably makes for good economic sense, doesn't make for the best food experience. (As an extreme, Imagine how the local asian family restaurant in the US having a plate of fried chicken heads on its menu would fare).
But these restaurants are so ingrained with this practice that even if you go into a Thai restaurant and ask for the dish to be "Thai-hot", they'll ask if "you are sure about that?" and still dial it back to something that is only middling spicy.
So while I can agree with the sentiment of the TFA, it win;t going to happen. If anything its really just the new heads of Thailand flexing their muscles to show that their coup d'etat is the best thing for the country.