It's obvious that the situation in chapter 1 has already devolved into violence, and he answered the door with the bat in hand, it's just as likely he used it in defence.
He also has info from the first life that these guys go around robbing people
The group is also going around forcibly pressing people into their ranks, they were about to beat up Brother Li for not joining them, you gonna tell me Brother Li was hoarding resources too and deserved getting beat up? They're a bunch of thugs, Jiang is explicitly the antagonist, don't know what you're even arguing for here.
"Hoarders are literally killing everyone", meanwhile this group was actually about to kill MC+friends. So unserious
You dont seem to understand how grave their situation is.
They are trying to keep everyone alive as long as possible in hopes itll be over soon some antagonistic crackhead is a massive liability. They didnt even fight over a difference in opinion or allegiance, he just went "I dont like you guys so fight me" cause hes genuinely mentally disabled.
And now MC and the guy are literally trying to steal the food so everyone starves to death
Actual fucking monster.
Lets not forget he basically let the hobo guy starve to death only deciding to help him out the last second.
Didnt he give him like 3 instant noodles to play spy for him? LOL.
And again, MC had to have been depending on these guys handing out food to survive that long the first round, the fuck is up with his attitude and lack of knowledge? It doesnt add up.
What else would you expect from chinese fiction I guess, being an inhuman monster is seen a virtue over there.