Dude, you have probably no idea how long it takes to set up scenes in heavy environments with multiple characters using iray lights that work and rendering it all. Setting up each render may take up to multiple hours, not counting the time it takes to render it. Some renders take up to an hour of time and even then I might need to redo it as something is not right. And every release consists of almost 300 such renders. On top of that, I need to add everything to RPG maker and write all the texts and test it in the end as I'm working alone.
You have clearly not played the latest updates as it takes a lot more time to go through them. Even if you're holding W and are skipping everything and not reading a single line of text, it takes more than half an hour you are stating.
I don't know where you got it, but I have never been bragging about my writing skills. That's, in fact, the sphere I lack the most that's why my game is more focused on visuals. But I'm glad that some people like the plot and are ok with what I write.
I don't get where you got that it takes three months per update.