@Riyeko Cause the audience for this is immature boys. And if the girl they like isn't a cliche harem archetype, or is a character with some actual realism and doesn't automatically have the hots for the MC, they dislike those girls.
@Rebel against the harem You're so right twin. Those people in the comments want a girl to be hopelessly inlove with the MC and also want the girls to be obedient and do anything the MC says blindly