I'm bored/drunk, so I'm going to go through this just so the truth of what it means to criticize this behavior exists on more pages of this thread. Who knows, maybe it'll stick this time? At any rate this is a succinct tour de force of BS.
1) No one who is in the business of releasing work "whenever" consistently holds themselves to the standard of a schedule, utilizes a platform that depends on one, chastises themselves for not keeping one, admits fault to their deadline expecting audience for not keeping to a deadline, or advertises their work in a way that depends on this diligence if the work is coming out just 'whenever'. Patreon depends on the contrary. Historical patronage worked to the contrary. And the artist themself does not conceive of it this way and has admitted his desperation in correcting these bad habits. Anyone saying that no deadline is justified in being expected, spits in the face of all but the most bad faith appeals to "not-necessarily". Patreon being used as a donation cup is idiosyncratic, Paypal can be used for that. Patreon has a system of expectations and exists because of and for those purposes. You using Patreon as a tip jar doesn't make that its proper aim.
2) Complaints can be made without personal appeal, and moreover can be justified regardless of this status. Although people can and have been personally wronged by the dev's behavior, the behavior itself is universally unjustified, period. Any who have invested themselves into this work in any way, in whole or in part, at any time, for any reason, or even those who simply view the situation as a disinterested third party, have ample reason to make note of what has happened as a betrayal, simply on account of it being so. There is no 'skin in the game' requirement to give these judgements, otherwise all juries would be illegitimate. Further, complaints on personal grounds, if someone is truly wronged, are something to be praised. "Whiners" are those who complain falsely. If a situation is truly unjust, it should be made note of.
3) No one needs to be themselves a musician to have a taste in music. So no one needs to be a RPGM "dev" to comment on what is a reasonable schedule for this situation. Even if more stringent requirements for critique were required, they exist within what we have been shown. Even against other RPGmaker devs, something has gone horribly wrong. Even against past release schedules of THIS dev, things have gone horribly wrong. And finally even according to this dev himself, something has gone horribly wrong. Proxxie himself recognizes his behavior as being an unjust betrayal of what is owed to his audience. No one but the most misguided of sycophants chant otherwise. Further, EVEN in hyper imagination land where the opposite were true, Proxxie wants to be better and no amount of positive reinforcement has made him so, much to the contrary. If you actually cared about Proxxie as a person or an artist, you would give him the benefit of criticizing his bad behavior, and this would be the right choice even if you believed (wrongly) that he was 'totally within his right to do whatever'.
He wants to be better, saying nothing hasn't helped. Give him what he is owed so he can improve. Critcism is a gift.