Why? Presumably because, of course, the new government rules imposed on doctors for antibiotics are about saving money and NOT about fighting resistance. The 5th antibiotic is ... not expensive in an absolute sense, but compared to the other 4 it's pretty expensive. The guideline from scientists is that if you decide to use it you need to nearly overdose the patient on it, despite that that is not necessary to cure them. Doing that is much more expensive (not that much more expensive really, it just looks impressive in % and presumably in excel sheets), but fights resistance. We're not doing that, and so we have ... probably not even a decade ... and then we have no treatment anymore against bacterial infection.
And in a decade, we will still be surrounded by lethal bacteria. Look at your hand. It's overwhelmingly likely you can't see them but you're looking at lethal pneumococci, several species. This is a clean hand we're taking about. Even a freshly scrubbed hand of a surgeon will still have quite a few bacteria. Grab a handful of soil. You know, the kind plants grow in. Your hand now has botulinum-producing bacteria, as well as many other toxins, tuberculosis (definitely if you're anywhere near a farm), tetanus, and the list goes on and on), some of which we have no vaccine against at all, and many we don't vaccinate for because it's not practical.
So the choice is between developing DNA sequences for viruses, or having a pandemic 100x worse than COVID every 30 years or so.
There is no choice here.