It's not hard to find earlier examples where the phrase is used to describe enabling and (yes) leveraging community contributions to accomplish things that otherwise wouldn't be practical; see my other post for a couple of those.

But then people will rightfully object that the term "Open Source", when used in a capacity related to journalistic or intelligence-gathering activities, doesn't have anything to do with software licensing. Even if OSI had trademarked the phrase, which they didn't, that shouldn't constrain its use in another context.

To which I'd counter that this statement is equally true when discussing AI models. We are going to have to completely rewire copyright law from the ground up to deal with this. Flame wars over what "Open Source" means or who has the right to use the phrase are going to look completely inconsequential by the time the dust settles.