And solar-generated electricity still carries the dangerous UV radiation. That's why skincare companies are the biggest sponsors of the solar energy revolution.
This is as disingenuous as OP is speculative. There are plenty of studies in non-bullshit journals demonstrating that millimeter-wavelength electromagnetic fields can affect voltage-gated calcium channels in the body. It seems highly unlikely that increased long-term exposure above natural baseline would cause autoimmune disease, but it also seems unlikely that it would have no other effect on the body.