I'm definitely not an expert but for EM waves to interact with something, the period (distance from peak to peak of the wave) needs to be smaller than the subject (ideally the length of the subject is an exact multiple of the period).

The higher the frequency, the shorter the period. My understanding is that high frequency 5g carrier waves are in fact at the scale that would be necessary to interact with these things we're finding.

I don't know if they do anything, only that it's probably possible to activate them with 5g if they do.