I mean... just finding the corpses of some of the hostages, and hamas leadership going on record saying "we're going to repeat the oct 7th attack" was enough for me. But given they have a history of violating the agreements they make... yeah.
I think it might last longer than back in 2014; cause there's been a LOT of fighting so far, but I'd be surprised if it goes as stated.
Edit: besides; hamas will never return all the hostages. Human shields are kinda their thing, and if they have no problem using their own people for it, why would they have a problem with the people they are actively attempting genocide against?