The "light bad" argument I think misses the point. It's not about heating, the idea is that an electromagnetic field might excite electrical systems in the bod

The "light bad" argument I think misses the point. It's not about heating, the idea is that an electromagnetic field might excite electrical systems in the body, and that we have evolved to tolerate some baseline level of that but maybe could experience adverse effects from sustained exposure above that baseline. I'm not saying that is or isn't true, but at least argue against the right thing.