Israel isn't in the crosshairs of progressives because they're allies. We have lots of 'allies' of convenience with disreputable reputations. How about Saudi Arabia? It's an apartheid state, except the apartheid is between males and females.
No, but we are more likely to protest closer allies. I don't know why people don't protest Saudi more. We're starting to see more discussion of them though.
Does this distress the Left? Nope. It's always all about Israel.
Meh. Hyperbole. It's not "all about Israel" and you're trying to understand something that's multifaceted.