I haven't read Lookism yet, but my general opinion of multiple perspectives is that I usually welcome it. It gives me a sense of how other characters view a situation that might be heavily different than how the MC sees it. Personally, when it comes to subpoints, I welcome learning about them through the lens of a different character so I can get a better sense of who that character really is. One thing I see pretty often is switching to another character's perspective and learning of their backstory and their unresolved issues, then the story switches back to the MC for some chapters before the unresolved issues in that character's life come up.
Despite all I said, I do agree that switching perspectives to a character I really don't like gets very tiring.