What is supposed to be debunked? The main claim seems to be:
> RF-EMF has been proven to be harmful for humans and the environment.
Which... is true-ish? That's a bit like saying water is harmful to the environment and humans. For sure it is, if it's rushing at you with incredible velocity and mass (power). Electromagnetic radiation could certainly harm a human - with enough power. Drinking a glass of water or sending a ~100mW 2.5ghz or ~50mW 5.0ghz signal at your body is harmless.
Maybe a better example is solar radiation or sound, which is much more similar to a 5ghz signal (re: invisible radiation). A bit of sunlight is probably good for you - intense, unfiltered, high-powered UV light could roast the whole earth.
A good study to dive into some of the effects of 5GHz/100mW radiation would be https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6765906/
A good snippet:
> The three in vivo investigations addressed a variety of issues including acute effects on muscle contraction, skin-reflection properties (which are more of a dose-related than health-related issue), and skin cancer [19,54,57]. The rat skin cancer study (one to two weekly, short-term exposures at 94 GHz, 1 W/kg; DMBA-initiated animals) did not show any positive outcome [54]. Another study examined the muscle contraction of mice and described some responses [19]. Again, 94 GHz was used, but power density or SAR values were not reported.
So at incredibly high power (94GHz / 1W/kg - thousands of times more powerful than what we're talking about with 5g) there were no positive outcomes for a skin cancer test. It was possible to stimulate muscle contraction, which makes total sense: pump enough electricity through the air to contract a muscle. But mammal bodies are great at insulation (our skulls are amazing at protecting us from rouge radiation).
The same study is also mentioned in this article https://en.wikipedia.org/wiki/Active_Denial_System and (https://www.wired.com/2009/08/pain-ray-first-commercial-sale...) which is about "pain guns" - systems that use radiation to inflict pain from a distance. It mentions a beam power of 30 kilowatts! That's 300,000x more powerful, and the weapon doesn't work if the person is wearing a thick sweater. It takes a _ton_ of power to interfere with organic objects.
Edit: I do want to say that I think more investigation should be done re: radiation pollution and it's impact on micro-biology, insects, birds, etc. Humans are really resilient, but it's not super clear that for example, some algae might not respond to low levels of radiation in interesting ways. My intuition says it's unlikely, as there is tons of low level radiation flying around in nature - 5g isn't some new, different kind of energy, but further study should be done, absolutely. I'd suspect light radiation is far more dangerous to bugs and bacteria than 5g though.