The study and new methods are not stupid. What would be stupid would be if we killed the 'good' bacteria.
Bacteria reproduce by the billions under constant adaptational stress.
High speed micro-evolution.
There ARE bacteria resistant to this attack. They WILL survive and reproduce.
Pretty smart little buggers, aren't they?
Whatever we do to interfere with their ability to survive, they will adapt to. Although we must (and fairly well do) control them to an extent, without bacteria and viruses, we could not live.
All life on Earth is dependent on death and destruction.
This new 'discovery' may give us a temporary ability to control certain bacteria. Which is a very good thing.
That it will not work perfectly on every type of bacterial cell, or forever, is expected.
But that is exactly the claim I'm seeing them try to make. That's why I call it stupid.