I don’t see your point.
The UN, as a body, is neutral to Hamas, at best, for Hamas at worst. If their report says hostages are still being raped (remember- sexual assault by Hamas means violent rape; sexual assault by IDF means strip search), I take that to mean you can take it to the bank.
Of all the victims in the war, the hostages may be in the most awful situation. Held by captors that hate them for who they are, subject to all kinds of assaults, in fear of dying at all times. (At least a few dozen have been killed).
They’re terribly inconvenient for all sides. For Hamas, they are evidence of atrocities and may have to be “dispositioned”. For Israel, they are human shields they need to plan around. For the U.S., they represent a possible political drumbeat, similar to the one that brought down Carter’s administration.
45 years ago, hostages were all we talked about. I don’t know why you don’t like an occasional reminder.