This isn't the place to argue about DS's practices, but you presented the question and i have to give the answer.
There's three possible scenarios that fit the narrative you are so perplexed about(the "ridiculous assumption").
1. DS gradually lost creative control of a game he cared about, due to his high paying patreons having completely different expectations from BB, and in order to not lose the insane income, he "sacrificed" his creativity thus gradually losing interest in it(and the patreon shakedown was the easy way out). So he started anew on another game he cared about and had full creative input. Glamour.
2. DS never really cared about BB, he always wanted to find a way to revive Glamour(that he preferred as a narrative), and used BB's success to build a team capable of remaking Glamour to the game we have today. At the first opportunity, he bailed on BB, and jumped to Glamour(with the insane online server scheme to squeeze that extra money and get rid of us pirates).
Ofcourse Glamour is a mess of its own, and all these BB fans kept pushing him to revive BB.
Which led to the new mess we have today(neither Glamour nor BB fans are happy with the result).
3. DS is a lazyass scam artist that loves milking his loyal fans out of every cent, and couldn't bear the thought of losing extra money from pirates, even when making 50k+ per month, so he revived Glamour with a system that would get rid of pirates(online save-server system/spyware). Ofcourse that backfired horribly, and he had to abandon it and live with the pirates, and whatever income Glamour is giving him today(plus adding BB in it for an extra income by its fans).
Bottom-line is, DS could continue and finish BB if he wanted today, and most of BB fans would follow him(along with their subscriptions). Why do u think BB-Another Story is alive and kicking? He could move the game to a different platform if Patreon hunted him, rename the game to something else, patch the content etc.
But he doesn't want to get(at least some) of that 50k income back? Does that make sense to you? Isn't it a contradiction?
On the other hand, it's easy to continue pushing 1-2 scenes(with a couple of renders each) and call it a huge update every month in Glamour, and pretend he's caring about both fanbases.
His team is putting the minimum effort for the maximum profit. Because the fans allow it.