Beats me. My best guess is they let the hype blind them to the reality that this tech wasn’t merely a few months away from the production-level reliability they needed from it. After a while, it sank in that they couldn’t play this up as a ‘just around the corner’ release and stopped hyping up every useless beta-at-best feature like it was a huge deal. Then, when the “we’re nowhere close” internal communique was leaked, it was officially time to bow out of the hype cycle for a while.