Someone read the specifications....
And saw the words 'Beam forming', and that was it, put two and two together -> mind control.
'Beam forming', is very clever, by knowing the position of the 5G device with respect to the 5G mast, is focuses the signal by combining multiple waveforms so that the amplification is greater at the spot (of the device) than it would from a single waveform, much like several people creating ripples in water, that converge at a single point.
And no, 5G much like 4G, much like 3G is not a ubiquitous waveform that blankets the blue sky around you, as the marketing people for mobile companies would like you to believe it is.