Reaction to story like this is funny to me. People have a weird idea that an mc of a story has to be good or "right" in some way.
A "evil" mc can be interesting, death note is a good example. Another good one is
karate survivor in another world. He's also a sociopath, but he's acting in a somewhat realistic way.
If you are going for an unlikable MC, you have to be smart about it and give some motivation to the actions of your character. Sure he could just be edgy for the sake of being edgy, but it's not very enjoyable on a narrative standpoint. There is no character growth, no inner struggle, no really smart thinking to enjoy, just pure power fantasy - which could be fine, but without any motivation this feel just pointless. If the mc is unable to feel anything, then why should I care for what he does or doesnt do.
The MC is also rather inconsistent. At first he only pretended to be a chuunibyou to keep a low profile, he even think that it was embarrassing to act like this, but as soon as the coup happen he fully lean into it and get increasingly cringier page after page.
The whole thing feels like the author is struggling to find ways to keep the story interesting, it feels like he try to make the MC do the most edgiest thing possible in an attempt to make the reader curious to see how he will be able to stoop even lower in the next chapter. I dropped it, for me chuunibyou characters are really the worst cliche possible (even the summoned heroes were thinking that..).
He reminds me a lot of Hajime Nagumo from "
Arifureta: From Commonplace to World's Strongest" , another painfully edgy character .. but at least this one had some reasons to be the way he is.