I think that once the bitcoin core is forked it should be removed from github. The developers need to make a final change and final version so people can't mess with the bitcoin core and change the path of bitcoin. This way bitcoin will stay more decentralized.
Yeah you know what: the raftsmen were very decentralized too - and due to techical evolution they are long gone.
Beeing "decentralized" does not mean that you can stop to evolve and to become better over time....