It’s fair to be skeptical. Personally, I’ll believe it when I see it in action. There’s likely an unexplained catch or they wouldn’t have shared any hard data in the paper.

One possibility is that they want to sell this technology to a big company without publicly disclosing all their trade secrets. However, this research could have been sponsored by a public grant, which would have compelled them to share some information. Therefore, they published a paper that appears more like a patent application than a research paper with solid data. It’s still noteworthy that it was published in Nature.