Oh brother,
Junk science at it's best. Hmm, change the structure of the water uh ? Could someone explain to me what that means ? Or it's energy level for that matter ?
A microwave can be dangerous; This is docuмented in every manual provided with any microwave you buy and it will detail how to use is safely. You'll find similar guidance from the FDA.
The above is provided without docuмention, proof, method of experimentation... Nothing in fact.
Oh yes, and the plants, the dead one was very clearly cut off from the base rather then died from, "badly structured water" or with "deficient levels of energy".
Most likely with scissors, any one who ever owned a plant could see this.