That’s not true. Even when the enemy uses a protected target you are constrained to the minimum force necessary. You can’t bomb a hospital because of a sniper.

And it’s certainly convenient that Hamas seems to choose only critical infrastructure to fight from, knowing it makes them and their wounded legitimate targets. Beyond belief one might even say. Especially with numerous international medical NGOs denying Israel’s claims and no hard evidence from Israel of this happening at a level that requires bombing.