There are currently 3 implementations by different teams being tested, all compatible with each-other and open-source.
No, it's not production ready, there are still plenty of bugs and missing features but it's close and you can go test it right now on testnet if you want to.
You're shifting the goal-posts, there is working software and it's clearly not "hand-waving bullshit". It needs testing (which you can help with, it's all open) and improvements but it's definitely not vapor-ware.
Show me some working software or this is all hand-waving bullshit. That thing's dated 2015, so where's it at?