A radio spitting 1MW of anything on your stomach is going to give you a pretty nasty burn from waste heat, but wifi range - 2.4Ghz is gonna cook your water molecules real good. Still no ionizing happening.

Key thing here is your talking about power, and individual atoms don’t care about that sort of thing. They care about the individual quanta they’re interacting with.

1000 radio frequency photons will never have the individual energy to bump an electron. 1 UV (and shorter wavelengths) photon can bump an electron