I disagree, they were right to use the same namespace and its questionable how you conflate that to stealing. If something is abandoned, how can you steal it? The project was dead, PR's and issues were ignored and the lack of Python 3 support was a huge issue (which the developer pathetically tried to shut down discussion over by releasing a python 3 port just hours before closing the project).

Changing the name space would have been problematic, as so many people use automation tools now to install package dependencies, rather than break their work because someone has zero intention of maintaining a project, they did the right thing and used the same namespace.

Had this been a case of RH disagreed with the developers direction or any factor around an active project, it would have been a shitty move, but considering the developer ignored any offers to help and let the project to fall into a stale un-maintained state, I don't see any grounds for him to throw his rattle out of the pram and blame RH here.