to be fair you could make a case that what this guy is arguing for has already happened, because meanwhile the dev stopped payments, he did it like a month ago, so in April which is the 4th month btw AND these are the dev's own words on patreon "I am a solo developer, and plan on releasing updates roughly every 2 months, depending on how much time I have."
So he's already been "milking" people for the past 2 months or so and the best case scenario now in my opinion if the update comes out at all, but I have stopped supporting the guy long time ago, cause its not a good track record to fall short on your own word in just 2 releases and then not even have the backbone for an explanation. People spend money on these games, money which they get by sacrificing their own time when a dev does this he basically shits on regular people and it is definitely Not a respectable way to behave and probably he'll just count his losses and move on.
Personally I will only support the dev again IF there's a steady line of communication (i.e. SP) and he had at least 2-3 consecutive releases with 2-3 months of interval between them, just like he states on his site.
I'd reconsider supporting even if it takes more then 2-3 months for a release to develop, but then change the description and keep people who spend money on you in the loop, like one post at least every week, otherwise it is basically fraud.