Vim is a very popular piece of software to the point where there are dozens or perhaps hundreds of forks made by all kinds of people. Many if not most of these forks are probably not very good.
Hell I can and have contributed and have been told to fuck off and fork it or entirely ignored.
I think more software engineers should worry about this stuff. If I had to teach a bunch of juniors in a computer science or software engineering degree program, I'd make them read this as a case study alongside good ol' Therac-25. The software we create is _useful_. How it affects other people _matters_. We ought to care about that no matter what the legal disclaimers say.