Let me tell you why you're wrong and frankly a fucking idiot. And you even said it yourself. You're not a developer you don't know how long things take.
Firstly this project hasn't been going for 2 years it's been 18 months tops (first real build was Jan 2017) and of those 18, 12months have been active development.
Secondly, little content? What the actual Fuck? This game probably has one of the most content in it. If you go on unique art alone, there are 45 unique ANIMATED scenes (probably more). That's not including the different busts, stills and everything else. Name 10 other games with that much content, better yet name me 5.
Thirdly, 4 or 5 people don't work on this project. I work on this project, Glassfish works on this project. In our spare time I hasten to add. Not as a day job.
Fourth, 0.8 -> 0.9 was basically a rebuild of the entire the game. Just because things didn't look drastically different, I promise you everything barring the art has changed. If you expect a bug free release from that then I emphasise the fact that you're an idiot, being a developer or not.
Finally, if you actually read anything I put out on my Patreon then you know my reason for leaving was a pretty damn good one and anyone with a soul would have done the same thing I did. Who the hell would prioritise an adult video game (they were making in their spare time) over the passing of a very close family member?
I accept valid criticism of my chosen development methods, to my project management, to my handling of certain situations.
What I don't accept is knee jerk reactions from a fucking idiot who's simply pissed off an entire rebuild had a few fucking bugs in it.
Keep your investor money, I'd rather not having someone like you investing in me anyway.