I can explain it for you: when you start writing a long complicated legal agreement, you never start from scratch. You almost always ask your lawyer to prepare the first draft and they take another agreement that's similar to the one you want and find-replace the names and modify a few parts of it. The early draft is never anything close to what you want and the hard work is hammering it into shape.
The document that they circulated was clearly a bunch of boilerplate. They assumed (wrongly) that the wider audience would have the same understanding and view of it that they did: that it was an early draft, subject to change. But the internet is not capable of such nuance.