I mean, we all pick up EM signals. The frequency range is the distinction, I think.
Sure, but sharks use them as a sense. We all pick up photons in the sense that we can all feel the warmth of the sun on our skin, but also, it is sometimes interesting to think about how people who aren’t blind perceive light.
But just to be clear, I don’t think we should suppose it is damaging and try to ask the military to stop using it (good luck, lol). It could be worth looking into though.