He sounds like a crank? :-)
Seriously... CB radios are "mostly unlicensed" and also 4W. GMRS is supposed to be licensed, but few if anyone even bothers anymore... and those are up to
50W (albeit ~4W is much more common). And heck, most people can get an amateur radio license by attending a one-day course, and then they can transmit hundreds of watts of power... including various "pulsed digital" modes.Basically... if there is a danger there, my opinion is that it's insignificant compared to that of driving to work every day or spending a nice sunny afternoon on the beach without sunblock (...the sun being ~1kW/m^2 and all!).
---Joel