Even if the ML engineers know about the wireless protocol (and I doubt that many do), the scientists/researchers who develop these models probably don't. They a

Even if the ML engineers know about the wireless protocol (and I doubt that many do), the scientists/researchers who develop these models probably don't. They are completely different domain. The lead author on this paper is basically a neuroscientist; some of the other are technically computer scientists, but probably have little hands-on experience with networking beyond whatever they did in undergrad.