Review Detail of Joeboon in Doomsday Online: Supreme Blessing

The numbers make no sense and the timeline makes no sense. Going into a novel like this you need a certain level of suspension of disbelief but after a while it just became too much. Oh its like 4 days after the apocalypse? Here's three well established gangs with hundreds of members who are all somehow the same level as OP mc and all have what was supposed to be extremely rare equipment. Also MC keeps throwing out terms and ideas that he knows about as a reincarnator and his group somehow automatically understands what they mean.