The white guy in the video is not the Nigerian doctor in the other video. The installer does not require sophisticated knowledge of 5G in order to climb a tower and mount antennas, cabinetry, and transceivers to it. He also needs to demonstrate how exposure to 5G leads to breathing problems. The 'environmental biologist' rambled a lot and had to be brought to bear by the presenter, but he didn't come close, in my view to establishing a causal link between exposure to 5G radiation and respiratory problems. Listening to him again, whatever point he was trying to make didn't become any clearer, and the presenter didn't sound convinced, either, which is why he pressed him for sources at the end, and the guy couldn't. Maybe you can. You are welcome at any time to provide some evidence of a causal relationship that explains how 5G radiation causes COVID symptoms - which incidentally are not limited to 'trouble breathing'.