this message may be
offensive
The protagonist in harems is always a boring stupid blank slate for the reader to project themselves onto, and all the characters in the harem have to be one-dimensional as fuck to make each of them feel unique enough.
Harems are an excuse for bad character writing and over-indulgent sexual acts, because if you took all the traits of each individual person in a harem and combined them into one, you could have a complex and interesting love interest.