I am sorry. This is not "targeting civilians" in order to kill them. And "human animals" in this context is Hamas. IDF would not siege Gaza if there were no Hamas inside.
At the same time, while cutting electricity and fuel is effective in terms of reducing Hamas capability to fight, I am partly agreeing with you that cutting water and food makes no much sense. This is because Hamas would have food and water anyway (they would not share with civilians either). Cutting electricity and fuel is more effective though.
This does not change anything I said before. The IDF goal is not to kill civilians, but create conditions where it is more difficult for Hamas to fight. The goal is to destroy Hamas, and civilians are victims of this war, started by Hamas, used by Hamas.