Esteemed anti 5G colleagues would like to have it both ways, but it is wrong.
On one hand they claim, correctly, that the 5G was not tested for its health impact on humans. Meaning, there are no studies available to prove it safety. This is correct.
But then, they claim that 5G is dangerous and proven to damage human health (Pall, Firstenberg, Davis et al.).
Big question is: how do they know it?
If, as they correctly claim, research on 5G and health has not been done then there is no evidence to show/prove that 5G is dangerous or that 5G is not dangerous.