if Hamas had done what it was supposed to do and built a decent infrastructure in Gaza,
What do you mean, what it was supposed to do? They are terrorists they are not anything else. All the infrastructure in Gaza has been paid for many times over by nations of the UN, channeled to international NGOs and UNWRA via Israel itself. Even all the taxes Palestinians pay go to Israel and Israel sends on some to the PA, not to Hamas. Hamas’ funds came from illegal activities only.
siting missile launchers around hospitals, schools, mosques, etc.
You are definitely not a military analysts or strategist. Hamas doesn’t have any missiles. Hamas has rockets. They are not the same thing. They also use mobile rocket launchers so they are not sited anywhere. There are only allegations that they launch them from nearby to schools, hospitals and mosques, which even if they do it is also not an exception to international law allowing retaliatory strikes on schools, hospitals and mosques because these are mobile launchers, not fixed launchers- so any retaliatory strike would not take out a rocket launcher because it won’t be there. That is a war crime. It’s not a notion, it’s a fact.
It is also clear from the ratio of metric tonnes of explosives dropped vs actual deaths that civilian casualties are being minimised
No, the opposite is clear no matter which way you analyse the facts on the ground or the statements from the Israeli’s themselves, that civilian casualties are not being minimised.
"Parading" naked men is a misnomer for a fairly standard military practice
No, it’s not an SOP for civilians or even actual POWs to strip them semi naked, force them to kneel bound and blindfolded in the dirt for hours on end or to load them up in such a way into dump trucks. It is a violation of the Geneva Convention.
I note the use of fashionable terminology "collective punishment" (reinforcing the notion that Israel is committing war crimes). All wars can be called collective punishment, that's kind of what a war is.
It’s not a notion, war crimes have been committed, many of which involved illegal collective punishment. To say all wars can be called collective punishment is such a bizzarre conclusion to come to. It’s akin to saying all sex can be called rape. Or all taxes can be called government theft.