X-rays are harmless if they are used at low power, and harmful if they are used at high power. Same goes for UV and gamma rays, only with different threshold.
Therefore, the original claim, “no scientific study has yet proved that electromagnetic stimulus adversely impacts personal health”, is obviously completely wrong: we know that some electromagnetic stimulus are harmful.
I plead guilty on the Mexico/New Mexico thing. For the rest, some people should re-learn basic logic and look-up “sarcasm” in a dictionary.