There are at least 2 people working on it (not solo dev.)
I already said the developer team, and don't forget the fact that having more than one people in adult game projects is just a miracle.
It uses basic 2d cartoony art.
Lol, I wouldn't call it "basic" cartoon art. And we all know that creating 2d assets are more time taking than using daz 3d stuffs. It's not the one of the most detailed drawings but still a lot more than "basic" cartoon art.
The plot is completely linear/kinetic, there are no meaningful choices and no branching story paths. I really don't know how they could make it any simpler lmao.
Yes, it's just linear fetch quest type stuff. But if you look at the world map, we mostly played the current content in the "Old Capital", but there's also "Festive Isles" - "Bowl Town" - "CIN Town" - "Hump Town" - "Rum Town" - "New Capital" - "Floa Town"
So, it's not like the story ending soon.
Which makes it even more hilarious that they keep crying "OHHHH WE NEED MORE TIME TO POLISH" uhhhh there are a lot of way better games with much more complex structures and higher quality art, that crank out updates much faster.
This game is not a masterpiece but it's not in a bad place in adult game market either.
And like I said, it will take +10 years to see the end unless the dev team just bored 'n created some unexpected weird ending before seeing the whole story.