He'll wait until he loses a bunch of patrons before anything at all happens. He'll keep putting out meaningless status updates on patreon to make people think it's imminent to delay that as long as he can.
Then, whether it's this release or in the next 2-3, he'll put out a shitty 1.0 that fails to tie together most of the story threads and only qualifies as a "finished" game in the sense that there's a The End screen. Fanboys will point at that to show that he finishes his games even though it's obviously a cop out.
He'll post about how he loves this game so much and put so much of himself into it that it ended up stressing him out and causing health issues. He'll claim that he wants to come back and finish it properly but he needs to focus on something else to get his inspiration flowing again. He'll promise to come back to Milfy City soon but meanwhile start another project.
And, of course, he'll never come back to finish Milfy City. But that's fine, since he'll have refreshed his patron count with some flashy new project that looks amazing and has a ton of potential but will ultimately stall out and die because his patrons can't see the obvious pattern repeating over and over.
It's a shame. Finishing a project is difficult, especially for something with so much attention, since a bad ending is pretty damaging to a project's (and developer's) long-term legacy. No reason to milk the cow and risk selling subpar milk that drives customers away when people are paying you not to milk it.