I get this sentiment, but obviously Adam wouldn't have to delay the game less than a week before the release if everything was rainbows and butterflies.
From the developers guide:
"The feedback in general continues to be excellent, with a lot of the testers having said that they can't now play TEW2016 because it's so lacking compared to the new game - which is, of course, what we're aiming for."
"Based on their reactions and my own play tests, I don't think there's any doubt that the game is light years ahead of TEW2016 and will be very well received."
Those comments above don't seem to be the same for most of the people commentating, maybe that has more to do with people are more likely to complain in a beta than praise. Maybe they just have to get used to everything. I am not sure, but obviously something went wrong.