There is a large span of people between gray beard programmer and lay person, and many in that span have some concept of open-source. It's often used synonymously with visible source, free software, or in this case, open weights.

It seems unfortunate - though expected - that over half of the comments in this thread are debating the OSD for the umpeenth time instead of discussing the actual model release or accompanying news posts. Meanwhile communities like /r/LocalLlama are going hog wild with this release and already seeing what it can do.

> any software developer should have a firm grip on the terminology and details for legal reasons

They'd simply need to review the terms of the license to see if it fits their usage. It doesn't really matter if the license satisfies the OSD or not.