I think the examples could answer that question. They’re linked at the end of the explanation in the README. However, I think each example ought to have a README.
Many of the example applications are corresponding code to our developer website which contains guides for them: https://www.swimos.org/server/rust/ We will get this updated as it isn't clear
Having to study an example before getting a clear enough idea what to look for definitely narrows down the potential audience. Examples are very useful and important, but, unless they fit in 5-7 lines, they are the second step.
The first step should be a few bullet points listing the key reasons behind the framework and the key benefits it provides.