* Electromagnetic hypersensitivity theory has no scientific basis and double blind studies show that the symptoms are not dependent on electromagnetic field.
* Dowsing aka divining is medieval practice with no scientific basis. https://en.wikipedia.org/wiki/Dowsing
> mountain of research and evidence on the effects of electromagnetic fields on biology.
This is trivially true and too generic statement to be used as an argument. For example in vitro studies don't transfer into in vivo. Especially in high frequencies.https://www.emf-portal.org/en is good source f and as you can conclude from the wast volume of research, it is well researched subject. No significant negative effects has been established from cell phone or wi-fi radiation unless the energy is well above the safe levels.