Personally i don't think people have given them enough credit, they took a big leap into the unknown. their near-fatal error was not being fully backed by people already in aviation in the first place, like they are now (supposedly). They ideally should have sorted the main details before they went on sale.
I think they're really on to something, and there seems to be significant demand for them (at least if you believe their press) and wish them the best for 2018