That is wonderful news.
The problem is, against any antibiotic we come up with, nature can develop a countermeasure. Such is the capability of limitless structural diversity of proteins.
Superbugs don't arise because our antibiotics suck, they arise because we overuse antibiotics, by feeding them to our livestock:
https://www.theguardian.com/society/2023/apr/25/use-of-antibiotics-in-farming-endangering-human-immune-system
And that's a vicious cycle. The more we do that, the quicker resistent strains arise, so we feed more and stronger antibiotics, which again creates a test-bed for even better adapted strains to arise, etc.
There is a solution of course, and new antibiotics are a part of that. But an even bigger help, would be to stop and think about if we really need to raise and slaughter billions of animals per year, or if it would be enough to have meat on the table maybe once or twice a week. Added bonus: It also help fight climate change, uses up way less water, and we waste less calories by using human edible produce as animal feed.