The things that the author failed to research or put basic effort into start to build up over time - basic failures in math are common, bodies of people who died weeks to months ago are still fresh somehow, society collapsed within a day despite most monsters being easily killed by anybody with a gun, etc.

The main character's abilities influence people's thoughts and perception of him, making the story more "cult building" than "city/town building." This gets more and more apparent over time.

When the main character really shows off how much of an as*hole he is, and the cultish things become excessive: His powers cover 10-ish apartment buildings, and he has at most 3-4 thousand people sheltering with him. He has plenty of resources, yet keeps basic things like water, gas for cooking/heating, and electricity locked off for most people (outside of some insufficient communal locations) aside from the most powerful ones. He keeps new refugees stacked FIFTY people per apartment, and threatens them with expulsion (i.e. Nearly certain death to monsters) if they complain about it. And then his cult members act like he's a saint for letting the one guy he kicked out to threaten the rest of the group back in.

At this point, this number of high-rise apartment buildings should be able to easily fit, at an estimate, 10 thousand people or more with only 5 per apartment. The influence of his powers is still increasing exponentially, and he has plenty of resources to give everybody access to electricity, running water, and gas through his ability. But he chooses to stuff way too many people into too small of an area, and keeps basic resources locked away for no good reason, yet he's treated like and portrayed as a saint. If he was a villain, I would be fine with it. But the author clearly wants him to be the second coming of Jesus Christ. That cognitive dissonance breaks my immersion and suspension of disbelief. What started out as a somewhat interesting community-building story fell off hard, IMO.

MC is literally turning into a deity as he gets more powerful, and it should not surprise readers that people would deify and worship the person who is singularly saving the world. Also, since he powers up as people trust him, and he can power others up in return, hard to expect him to actively discourage that behavior.

I don't mind him being untouchable in his dwelling, but EVERY time there's even the slightest sense of crisis, he gets exactly what he needs from the system to resolve it easily- be it a level up, skill points, new skill, etc. There is basically no tension, no risk of losing a major character or mass casualties as the result of losing a battle, etc. The last chapter is LITERALLY titled "Deus ex Machina", like come on!