I think people are underestimating the intelligence capital spent by Israel in all of this and why they keep grinding forward on the information they have.
Like anything in that is perishable, information has a shelf life. Worst the ability to harvest that information is subject to whims of the environment around it.
Israel has in effect expended most of their information resources to deliver a massive debilitating blow and now will be on the backside of the information curve as the means and sources used to gather that intelligence has been severely compromised in Lebanon and the rest of the Arab world. All around the Middle East you should see regime-wide security reviews, SOP shakeups, communication protocol changes, and a re-vetting of all personnel with access to sensitive people, locations, comms, and information. That is going to seriously hamper future intelligent gathering.
What Israel has going for it is massive chaos in the leadership structure and a fear of communication devices, which will keep Lebanon and to some extent Iran from being organized and keep them reactionary. But like anything else, time will erode that advantage. Therefore Israel must achieve as many of its goals in Lebanon as possible to put Iran in a position that their proxies in Gaza and Lebanon are not viable to keep supporting and doing so puts them at more of a risk than the prestige loss by abandoning them.