That’s true only if we indeed know nothing about 5G, and that’s demonstrably not the case. In fact, the pretend open-mindedness is tantamount to denialism, if we accept that findings on ≤4G translate to 5G, and there are good scientific reasons for thinking so, based on our established understanding of physics and biology. It’s possible that 5G changes the picture, and I am indeed open to the possibility. But at the same time intellectual honestly compels me to describe the chance of this happening as low, given what we generally know about the biological effects of non-ionising radiation.
Put differently: Given what we know, it’s honest to say that 5G might carry risks, but that there is currently no good reason to assume so. It is not honest to claim, as the article does, that “we have no reason to believe 5G is safe”.