He was literally cannon fodder. Useless and boring. Not being the villain he should have been at all.
he just ends up going the cliche route with these kind of novels. MC is good in real life > transmigrates into a villain role > does not act like a villain > Useless, unassertive and no clear role except being "Pure/Righteous" and doing an awful role at being despicable and stuttering all the time. (You get a sense that the MC is air headed, sheltered, and needs to have his hand held all the time. Not my cup of tea.