I think it’s much sussier because it has sexual violence throughout along with the genocide business. Shield Hero is sexist but surprisingly close to the (disgusting) average for such fiction once you get past that first episode (which is fucked up pandering to red pillers). Like, idk, think about the typical isekai and it’s astonishingly objectifying, to the point that it really feels like the MC views women in the fantasy world as truly being NPCs who mainly exist in reference to his sexuality, or maybe the MC is a Good Guy ™ but the shot composition and animation framecount demonstrate that the viewer is not meant to have nearly so noble an attitude.

On the other hand, there’s the pseudo-isekai Redo of Healer and the actual isekai Slave Harem in the Labyrinth of Another World, both of which are much worse but also essentially soft porn and therefore less likely to be discussed publicly.