It’s kind of wild that this whole ecosystem evolved without previously coming up much on Hacker News, but that’s just how it goes. Inventing jargon isn’t bad. There is certainly a lot of programming jargon that we inflict on others.
They have abstracted the design elements into their 'tokens' so that they are defined parameters/variables/model-elements that can then be reified at some point before deployment.
This is a fancy way of encompassing a system's design decisions into a model, which can then be used either abstractly or concretely to proliferate them into the entire system, as needed, at the latest possible point the actual values are needed.
It really looks like top-shelf work, but I think their deciding to use the word "token" was an unnecessary mistake.