You know . . . all these accusations that the developer is just milking his patrons . . . strikes me as unlikely.
It seems to me that the developer is depressed. I think he should go to a doctor and get some help. It seems that he has lost interest in life, and this is impacting his work.
When you read his recent statement on patreon about updates, he says that he was afraid to come to f95zone because of the negative comments. That's a trait of someone who has depression. I would bet he's working through some personal problems at the moment, such as the death of a loved one or even an existential crisis.
Same thing with setting all these deadlines and missing them. That's someone who is struggling to get out of depression by trying to force themselves to adhere to a deadline, to get out of the sorrow through willpower. Well, that doesn't work!
Prayer can help; exercise can help; but I think a regular doctor could give him something to take for a couple months or something.
I'm not a doctor, and I don't know the developer. This isn't advice. This is just me saying what I suspect is happening here with our very talented and emotionally sensitive developer.