Nothing wrong with power fantasies and overused themes and tropes, but this is just lazy, braindead writing.
Has anyone told these authors that the appeal of these kinds of stories is the nation/kingdom building part of the story? The MC's struggle to figure out his abilities as he works to befriend the locals to initially survive? You know, the rising from the ashes part?
Power fantasy authors truly are something else. It's almost like they're physiologically incapable of understanding the tropes, concepts and themes they're working into their stories.
If you're going to be this lazy at least be like the Solo Leveling guy and put in the effort into making top tier, full color art, and decent fight choreography, geez.