itch.io

I think it's completely alright to be curious about future updates, especially after that amount of time. But I mean...you could've just asked, like "Hey, what's the current state of development" or "When do you plan for the next update to release" or something like that. 

That would've been far more respectful than being demanding or judgemental about it right away, without knowing the reasons for the delay.

And about your worries for the donators: They can choose to stop donating literally anytime, it's up to them if they wanna believe in an update or not or if they maybe just donate out of appreciation for what's already there. It's not really an unjust thing for the developer to receive donations, even when there's no new updates. In the end, every donator needs to decide that for themselves.

It's absolutely shameful of you to call the developer lazy or say they need to "do better", no matter when the last update was. 

This is basically a free game and you are not entitled to frequent updates and content, regardless of how much you donated or for how long you've been a follower.

The developer will release updates based on their own schedule and you have no place to set expectations for the development or even implore the community to stop donations. This is their game after all, not yours. 

Perhaps rather be grateful for the fact that you already got to enjoy all the updates that have come out so far.