Interesting, what languages are supported? I did not see a list, only the comment “multiple languages supported”. As others said diagrams sell but notoriously hard in practice due to the “hair ball” problem.
Currently supporting JavaScript, in particular NestJS framework. Angular framework support is coming and Python.
You are absolutely right about "the hair ball" problem, therefore, diagram is with layers that go up increasing the abstraction - starting from really low level (classes, etc) to high-level (system components). Different utilities and helper classes are disregarded straight away.
I suspect from how "MVP" their site is, plus only NestJS actually has a "use" button instead of a "request demo" button, that the only thing currently supported is NestJS based javascript, and this is a way to test the water if they should build other languages. I could be wrong, ofc.