A particle that only destroys living matter? Really? How does that work? When the particle gets to an atom it analyses it to see if it's part of a living being and if it's not it leaves it alone? Does that particle have a degree in chemistry?
It's star trek. What did you think it was going to be. It's basically the opposite of the genesis device - just as implausible and yet another way nemesis tried cribbing from TWOK even down to some of the dialogue regarding the radiation's properties.
I don't tend to think of some it that deeply or it would ruin most of trek for me. This is a perfect example of that to me.