The doc emphasizes "100% Python" and that backend is natively in Python. I'm reading this as "you don't need anything else than Python interpreter." Given a large number of packages aren't in Python under the hood, that's a big, unnecessary hyperbole. It's Ok to acknowledge that there's a heavily reliance on non-python code, e.g. Taichi or Numpy.
I also think that the distinction isn't particularly useful. Just pedantic claims will get pedantic feedback.
It’s particularly useful if it is an open source project and you want to communicate to people who might want to hack on it (either in a fork or the main project) what languages they will need to work directly with to do so.
It’s not important to end users, but they aren’t the only audience.
I also think that the distinction isn't particularly useful. Just pedantic claims will get pedantic feedback.