I did it mostly by religious reason, but also because everyone writes about Headscale and I didn't want to write about things that everyone already knows.
I guess it doesn't really matter, but it would have been nice to give some transparency to the reader that it was not due to actual technical limitations.
It should be the same exact copy, or situation turns into "try demo version, buy the full product". At least from my point of view.
I think it makes no sense for them to put much focus on developing a separate small open source version of their server. So it is good that they actually support its development.