Please identify the particular model of microwave oven that is "not well shielded". You probably can't, because there aren't any more. Most are extremely well shielded and have sophisticated interlocks that shut down the magnetron (the transmitter) if you even try to open the door.
Who said anything about oven design and safety interlocks? Compare a >3 yo oven to what that woman is complaining about. Microwave ovens never leak? Net outputs that are negative dB over Wi-Fi transmitters? If that was true I wouldn’t have to find, measure and account for ovens in heat maps when designing Wi-Fi networks to avoid outright jamming and throughput-reducing interference.
I have a second-hand home and the microwave that came with it looks like it was bought in the mid-80s. I’m sure it’s frying my brain a little at a time each time I walk by it. Also, it’s in a built-in cubby hole that is open to the basement stairs. So I get fried twice.