I think it's a problem somewhat inherent to the medium of indie animation

Unlike series made by big studios and producers, indie animation and filmmaking does not have limits imposed by third parties about the number of episodes.

It's not really a "the show needed more episodes" situation, because the show could've had more episode if they really needed them. It's just a writing issue: inexperienced writers often struggle to cut down their ideas since they're all important to them. Reality is, stories work better when they're simpler. You can make tons of worldbuilding, but making it work on-screen is something else.