On this, I agree completely with all your points. In fact, the average person is very easy to change their perception. The media is quite good in shaping peoples perception. If the Israel/Palestine war was not publicised in the media as it is done constantly then people wouldn't feel so strongly about this conflict the way it has been this past year. So yes the media basically decides and affects people perception and actions. We haven't seen the same level of concern with other more brutal and deadly wars/regimes/killings. This proves that its not just about human lives but other reasons at play.
There is. From a western point of view this war is horrifying to a personal level.
They were taught Jews are the good guys always under unjust persecution. Turns out they have no hesitation harming other innocents. Their support of genocide is near uanimous.
This shocking reveal destroyed confidence of everything they knew.
They are being told most bold face lie like "IDF is the most moral army", against video evidence of IDF soldiers gleefully committing war crime.
They become aware of how insane their entire government is across all spectrum. Part of their anger toward IDF is actually them lashing out on their own governement and media, rather than suffering of Gaza children.
Upon realizing this,
they become aware how absolutely powerless they are, over their own government. All politicians are bought over, regardless affiliation. AIPAC brag how they can make anyone win. Israeli laugh at their outrage, knowing their government will bend over backward regardless of their outrage. And worst part, the Israelis are correct.
The illusion of democracy shatters.
The final realisation is they are as occupied as Gaza. Israel controls everything in their own country, media, politicians, military. Any criticism is outlawed as hate speech. The superpower they were proud of are no more than a puppet. They are ruled by a foriegn dictator with an iron fist. They no longer own their own country. If Gazans are fighting against that dictator, then they are fighting for American's liberation. My liberation. Gazans are fighting the same enemy as ours, and their suffering is our suffering.
Gazans are no longer one of countless people suffering, they are one of us. And I wish our side can win.