Israel has provided no such proof

How could it?
However, the hard facts of the casualty statistics are strong evidence that it is true.

and even if it had, you were extremely outraged when I suggested you supported the killing of hostages - you are now supporting the killing of hostages.

No I am not.
They are human shields not hostages.
Hamas has made it impossible for Israel to strike back at them without hurting civilians.
They try to reduce the harm to civilians by giving warnings and by allowing pilots to abort missions where civilian casualties would be too heavy.