I think a lot of people think the animation is the "Hard" part. And do not get me wrong making a Blender animation look good takes some skill. However putting together a full long form story with plot lines and the like is something that you just wake up and be like "Yeah lets do this"
I think with where MW was going dude was probably like "I can turn this until a full multi episode Porn Soap" and decided to go down that path. However, once you do that it is not as simple as you think. A lot more writing of dialogue, a lot more paying of voice actors to speak the dialogue, a lot more character development, which means balancing out sex scenes (less scenes), transition scenes (more of these), and the like (everything in between). And if you are a self described "perfectionist" even worse. I wonder how many script rewrites he did, how many scenes he scrapped because there was something wrong with the color of a shoe or some shit...
The point is he went down this rabbit hole of trying to a longform story bigger than anything he has ever done, and now the situation is kind of a hot mess.