You are kidding right? Fan made small project like that? Going on for over 10 years now? With more then a dozen finished projects on their belt with visible improvements over the years? They are literally the gold standard of these types of games (UE 3D Sex Scenes, a little Story and progression) Lets see your game, your fanbase your retention. Getting 4k a month for a hobby is huge. I remember the very first project with Alextraza and the donors names on a huge stone inside the game.
And between Christams episodes, 2 games in development and the shit show out there we call real life, I am pretty happy with the state of the game/dev. I donated around 4 times these past 8 years, mostly around christmas to see where the games are at.
But sure, feel offended by donating and not getting stuff as quick as you want. Might want to think about what the word patron means - you support some ones passion not for your own benefit but for his/hers. It's not like you BUY something.