I don't think Israelis will feel any more guilt about what they're doing now than Americans feel guilt about the firebombing of Dresden.
https://www.history.co.uk/article/was-the-destruction-of-dresden-an-allied-war-crime
"The health ministry in Hamas-controlled Gaza responded by releasing a 212-page document containing the names and identity numbers of around 7,000 Palestinians it said had been killed in the Israeli bombardment of the enclave.
International groups, even some operating in Gaza, and global media including Reuters are not able to verify the figures but reporters have seen large numbers of bodies.
U.N. and other international agencies say there can be small discrepancies between the final casualty numbers and those reported by the Gaza health ministry straight after attacks, but that they broadly trust them."
https://www.reuters.com/world/middle-east/despite-bidens-doubts-humanitarian-agencies-consider-gaza-toll-reliable-2023-10-27/
https://www.history.co.uk/article/was-the-destruction-of-dresden-an-allied-war-crime
"The health ministry in Hamas-controlled Gaza responded by releasing a 212-page document containing the names and identity numbers of around 7,000 Palestinians it said had been killed in the Israeli bombardment of the enclave.
International groups, even some operating in Gaza, and global media including Reuters are not able to verify the figures but reporters have seen large numbers of bodies.
U.N. and other international agencies say there can be small discrepancies between the final casualty numbers and those reported by the Gaza health ministry straight after attacks, but that they broadly trust them."
https://www.reuters.com/world/middle-east/despite-bidens-doubts-humanitarian-agencies-consider-gaza-toll-reliable-2023-10-27/