Well, sucks to be you then, since many legal experts do see how this rule applies to this case: https://opiniojuris.org/2024/10/15/is-it-cake-on-boobytrappe... https://www.ejiltalk.org/were-the-israeli-pager-and-walkie-t... https://www.ohchr.org/en/press-releases/2024/09/exploding-pa...
None of these have anything to do with what you cited above, which was ICRC's summary of customary law about inherently indiscriminate weapons. Your first and second links here are examining entirely different challenges to the operation's legality, and the third is just some vague assertions from questionable sources like Francesca Albanese.