Github issue discussion: https://github.com/wa/wahoo/issues/95
And this: https://github.com/derekstavis/diary-of-a-stolen-repository
This is about a lot more than the MIT license. Folks, be clear about the copyright assignment of code that you contribute to projects, and project admins, keep an eye on those copyrights.
TLDR: Oh My Fish got replaced by Wahoo. But rather than start a new project and declare Oh My Fish unsupported they replaced the Oh My Fish code in the repo with Wahoo code. Breaking userspace in the process, and thus starting them on the path that caused all this drama.
At least that is what appeared to happen according to that thread.