So if I understand correctly, Israel managed to get a bunch of people in Hezbollah to use pagers and walkie talkies that contained bombs. But they have not been able to gather enough intelligence from control of those communication devices to find and rescue the remaining hostages? And if they weren’t able to catch useful information from those devices, why did the people holding those devices deserve to get blown up?
Because tensions between Hezbollah and Israel have been steadily rising since October 7th because of Hzebollah's objection to how Israel is acting in Gaza. To be clear, prior to October 7th, tensions were already high enough that they would regularly lob bombs at each other. Today's "escalated" tensions include northern Israel being evacuated due to threats from Hezbolla's rocket attacks.
At this point, it is clear that the options available to Israel are to either withdraw from Gaza and hope Hezbolla stands down, or end up in a full war with Hezbolla. Historians will say that the war with Hezbolla started months ago, and this was just one attack among many.
From a spy craft and capabilities standpoint it’s an amazing attack. I’m skeptical that using the devices as bombs is more useful than using them for spying, but who knows? It is super fucked up that random people who happen to be near the targets could be hurt. But between that and the stuxnet attack, it’s safe to say that Israel is capable of crazy sophisticated attacks.