Yes not disputing at all that there’s a proxy war (though Soviet Israeli relationship deteriorated long before that started with Soviets funding Israeli opponents since 1967), just that despite or partially because of this, Israel is closer to Russia than most western countries. Isreal doesn’t want to upset Russia and give them more incentive to fund proxies against them, and some Israeli governments, like Netanyahu’s especially, have helped provide cover for Russian actions. And Russia at times will often take surprisingly pro Israeli moves despite also funding proxies.

I don’t think it would be impossible for Israel to switch alignment to Russia, and I think you would quickly see Russia providing cover and stopping any assistance with proxy conflict against them. It would be essentially accomplishing Russia’s goal, so what would they have to fight Israel about anymore? Putin is a real politic great powers kind of leader who has no qualms about butchering civilians by the thousands. He’s certainly not aligned with Iran because he’s concerned about Palestinians. Israel becoming fully aligned with Russia would be accomplishing a 77 year in the making goal for the Soviet Union and Russia.