Seems like we can all just unshield our microwave ovens and fry two birds with one dosage of cancer-inducing electromagnetic waves. Honey, dinner's ready and your phone is charged. Little Alex is vomiting again and his hair is all over my new dress!
While some sources call into question the health effects of EM radiation, radios aren't causing vomiting and hair loss unless they're also made of radium.
The main danger is power level causing heating/burns - and a microwave operating at 1000W+ is going to do that far more easily than a router with 1W at most.