I think it’s cuz what happens in the future.
Spoiler below that’s basically useless.
Some links that people posted and the one I found:
1) Internet Archive (recommend going to pg 186 where they’re talking about the judgement day thingy and how the shelter was exposed) - https://archive.org/details/little-mushroom-yi-shi-si-zhou/page/n1/mode/1up
2) Novelhall (starts from ch. 20) - https://www.novelhall.com/little-mushroom-21511/8887092.html
3) Novelcool (starts from ch. 20 as well)- https://www.novelcool.com/chapter/Little-Mushroom-Chapter-20/4347445/
Down below is smth that will happen in a few chapters.
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From the portion I read, (long ago) which will to showing in a few chapters. The commander Howard guy dies. There was a protest going on too.
People r saying to just focus on the mc and ml cuz many other people end up dying as well it would seem. (I don’t read all the way. But from what I’ve read from the comment section 2-3 other people died but that’s the supporting characters I think. Many extra characters died cuz ML had to judge people before they entered the shelter) it seemed very scary and heartbreaking. Also a protest going on. The protest kinda annoyed me. Like I can get why they’re mad but what do they want? The whole shelter to be infected? Thankfully they shut up after someone died but it was pretty sad cuz it was a character we see from time to time (rarely). Some of us probably liked him too but idk.
Anyway ML’s judgement was proven to be right.

OKY I NEED SPOILERS RN WHAT HAPPENED AND WHY IS EVERYONE FREAKING OUT I DONT MIND IT JUST PUT THE SPOILERS WARNING SO OTHERS DONT FREAK OUT ABOUT IT BUT PLS TELL ME