Started watching it and holy shit how bad it is. Even worse than Death March.
This time they didn't even bother showing how the fucker got there to begin with, it starts already after he somehow managed to become a local warlord.
That being said, looks like this one is targeted more towards grand strategy fans as opposed to usual RPG ones. And it's not even an isekai strictly speaking, since he time-traveled into pre-ancient past.
The amount of cheese is indeed critical though, you were spot-on with that.
Anyway, a decisive drop.