It’s hard to overstate the importance of “anti-imperialism” to the modern post-Leninist left. Their highest priority is to spread the word, and all kinds of moral gymnastics can be forgiven if they help to open public eyes to this not-so-obvious cause of all of the world’s problems.
It’s a touchstone. The most important argument to win. Their problem is that it’s also a tough argument to get across. For this reason, Israel is a godsend. It provides a useful, simple, parable that helps make the case for something that is a foundational belief to a political sect.