The "battle" is the result of copyright people trying to use open source people for their ends.
In the past, for software, the focus was completely on the terms of the license. If you look at OSI's new definition, you will find no mention of that, despite the fact that common licenses in the AI world are not in line with traditional standards. The big focus is data, because that is what copyright people care about. AI trainers are supposed to provide extensive documentation on training data. That's exactly the same demand that the copyright lobby managed to get into the european AI Act. They will use that to sue people for piracy.
Of course, what the copyright people really want is free money. They're spreading the myth that training data is like source code and training like compiling. That may seem like a harmless, flawed analogy. But the implication is that the people who work and pay to do open source AI have actually done nothing except piracy. If they can convince judges or politicians who don't understand the implications then this may cause a lot of damage.