If you don't have preferential voting, the only party worth voting for is the one pledging to introduce it. It would solve this bullshit overnight.
Instead, people are fighting over which neoliberal to elect; the slightly more progressive one or the significantly more fascist one. Both of them are going to put the profits of wealthy donors ahead of human lives and neither is a true solution to mounting problems.
Fuck, not only will this not stop the genocide (because Israel doesn't actually need the weapons in the first place), you won't even solve the bots and propaganda. Israel has an extremely sophisticated cyberware unit and they'll just join the Russians trying to get Trump elected.