Review Detail of Gurthang in Reincarnated as an Energy with a System

Cool story with good worldbuilding and side characters. The prevalent and major issue that ruins the book for me is the sheer stupidity of the MC, born with an IQ rivaling the rocks he resides in, he seems unable to think for himself and use his abilities and system in an efficient way. Another major problem is the inconsistency of the system's point system. The value of items and knowledge of things in the system shop fluctuates wildly to where a couple of shovels and a single coin cost as much as getting a fully functional human body. You could buy basic knowledge of every language in the multiverse, or you could get a farming toolset... Overall I believe the cool and interesting setting and universe are ruined by an incompetent lead.