Yup. They can adapt to any single stress.
The key is an antibiotic cocktail. If one in a million is resistant to “A”, one in a million is resistant to “B” and one in a million is resistant to “C”, how many are resistant to A+B+C?
1/1,000,000,000,000,000,000, a number so large it exceeds the National Debt, a fraction so small that most people have never even heard of a quintillionth by name.
Fale analogy, there is no such thing as a single stress in the real world, it's all multiples. And in addition (no pun intended) your numbers are illustrative, otherwise there woul dnever be any successful bactrerial adaptation ever. Finally, how many successful adaptations are necessary? Answer - only one that lives to reproduce. Your same mathematics grows that survivor into trillions because it can defeat what is attacking it.
I'm not saying this isn't probably a success. I just get cheesed off when it totuts itself as perfect. And that's coming from the actual science foundation, not even the press, so it's a million times more offensive.
But look WHERE it's from - East Anglia, the hockey-stick climate change liars. So what IS it with that place?