I really want to see someone fund/perform an experiment, that would hopefully put any doubts to rest. It might take 10-20 years to do but it would be worth it:

Create 2 completely shielded rooms. In one of the rooms, completely blast the inside of it with 5G, 4G, All the Gs, Wi-Fi, whatever 24/7. Every single kind of EMR that anyone has doubts of. You can even include future spectrum, whatever. Run it at 3x-5x the amplitude of anything anyone could reasonably expect to come across in the world.

Now, Using only organic and living material (mice, monkeys, plants, single-celled organisms, humans, whatever): confirm which one of them has the EMR turned on. If EMR was dangerous you should obviously see some negative effects. Take as much time as necessary to confirm your findings.

THEN maybe we can stop all this nonsense and point back to the study. Except I know some people would say "You tested 300 GHz, what about 301.5 GHz!!!! That one is totally dangerous!"