Well, that may be ONE reason, but there is another reason much, much more sinister. Graphene, when exposed to microwaves will absorb and then give off HEAT. Now, what happens when BLOOD that is saturated with graphene particles is exposed to heat? The organism immediately dies.
Now, imagine a crowd like the J6'ers.
Police van rolls up with a large microwave transmitter dish plate on top, essentially a radar-type setup.
turn it on and ZAP! Hundreds fall dead in their tracks.....................
Based on my very-limited knowledge of antenna sizes and wavelengths, I don’t think that would work that way.