Its the fishing minigames, the procedural dungeons, the other fishing minigame, the really complicated shop windows, the crafting system, the guild board and guild assignments system, the hero points and progression system, and now apparently the "tinkering menu" and lockpicking system. people liked the sandbox renpy vn but i'm betting a good portion of the last 3+ years have been spent messing around with implementing different kinds of game mechanics in renpy, and subsequently scrapping them, when really his time might have been better spent focusing on the story, aiming a little lower in terms of new and improved game mechanics, and taking that experience and those ideas for the next game, perhaps in a different engine thats more supportive of them.
Not having a plan for the story and disorganization are the other part of it. By Komi's own admission the end of chapter 0 sort of promises new things but there wasn't a plan going forward, and building a lore and story from that point, with huge expecations from fans is not easy. Its even less easy if figuring out that story isn't your complete focus because of experimenting with the aforementioned game mechanics.
From my own personal experience I know that sometimes the critical work (in this case perhaps the story and events) can feel overwhelming while pouring your energy into something else which is engaging and smaller scale and fun is an easy trap to fall into.
It is as I said, I'm really hoping for the best, but expecting the worst. I do believe Komisari is doing his best, and will deliver one of, if not the best Koikatsu game in the site, however, there's really no excuse for his behavior and schedule, especially considering the trust so many of his supporters (and ex-supporters who got upset over these years without updates). If Komisari had closed his Patreon, stated that he would take a long time to finish, or didn't know how long it would take, people would have taken it much better. The fact that he keeps edging people, that he gave false hopes and promises back in 2021, and that he keeps getting money over a project that the supporters have no way of knowing if it'll ever come, that's what made people upset, and rightfully so. What if he happens to be a scammer, and end up stealing all the money? That'll affect other honest developers, because it'll build a huge mistrust from the community. That's a scary thought, and unfortunately, the "Early Access Developer Community" is not really known for finishing their games, ESPECIALLY porn games.
I understand your point of view, but you should really be more skeptical, or at least understand and respect the fanbase position against Komisari. And by them, I mean people with actual constructive criticism, or genuine disappointment, not people like deskt (previous comment), whose sole purpose is to provoke, attack and undervalue Komisari as a developer.
In the end, we're all just eager to play the game, that's a huge burden on Komisari's shoulders, but it's his responsibility to bear it and deliver what was promised, meet the fanbase expectations.