I have a jw relative who wont use a microwave. She said that 'someone' did an experiment where they watered plants with microwaved water and tap water. I asked her did they boil (on the stove) the tap water for longer or the same time. No, they didn't boil the tap water...
Apples and oranges. They would have gotten the same results if both of them were boiled. If they had both boiled the water PLUS a tap water control that wasn't boiled they would have valid results.
Logic isn't their strong point.