That bomb is large enough to level an apartment block, so ~100 casualties and they don't know where it will land. Who are they targeting with that type of bomb, 1 Hamas fighter hiding among population?
It's error margin is in hundreds of meters. You are not allowed to kill 100 innocent people in the hopes (not certainty!) of getting 1 enemy soldier. That's exactly what 'indiscriminate killing of civilians' means.
That is why United States has never used this size of bomb, let alone unguided, in it's recent wars in Urban areas. They were also fighting guerrilla fighters - Taliban, Al Qaeda, etc.
The act of using this weapon in Urban area is a war crime, just as it would be a war crime to use chemical weapons, etc.
since it talks about "brave men bringing supplies" although for some reason not to civilians above but to the hamas operatives.
Imagine there was happening in New York - and someone posted a video “They are using Subway and maintenance tunnels to deliver supplies” - obviously infrastructure would be used!
Next step: “therefore any building over a tonne is a valid military target”. Do you realise that would mean basically any building in New York?
If that were true, you could bomb hospitals and it would never be a war crime. You must realise that if you actually think through the logical consequences of your argument.
Military facilities are things like an arsenal, munitions depo, barracks, forward operating base, fire support base, etc. To the best of my knowledge, this was never found.
That is not a military facility of any kind, let alone an 'evil Hamas terror facilty'. The denials are really getting ridiculous now.