If I were the rsync maintainer after this I'd unpublish it everywhere I had control over, delete the repo and turn off my computer to go walk in the park. The linked thread is insane.
Again, this is not work and they are not customers.
This is somebody spending their free time on code they enjoy and then putting the result online.
The reason businesses are careful about which customers they fire is because they want to keep having customers. Open source maintainers have no reason to deal with that shit.