Nonsense. The issue here is that they're doing the wrong thing. SpaceX proved reusable rockets were the future at about the same time Arianne 6 got funding to begin development (2016). They should have cancelled the project and started again with a reusable rocket at that point. Of course they didn't because of politics, but it does mean they did a stupid thing and spent a ton of money on a rocket that was obsolete before it left the drawing board, just like SLS.