So not having been personally burned by any of Molyneux's games, and actually rather liking No Man's Sky for what it is, I actually have some sympathy for these game creators.
If an artist created a piece we didn't like, or a musician made an album (or many) we didn't like, we would be disappointed and eventually move on. Why do we take things so personally when it's a game instead? What is it about the anticipation/expectation/release/disappointment cycle for games that leaves people feeling so betrayed? I would say buyer's remorse, but the ample collection of reviews should prevent most people from buying something they ultimately hate.
Creators have hopes for themselves, often incredibly high hopes, they make promises, and when they fail to deliver on them usually they are the first to be disappointed. They have to make peace with what they created and ultimately either work to improve them (as they have been with NMS) or they try to learn from the experience and move on. Why can't we?