But under this guideline it seems that if I say "ethnostates are a crime against humanity and Israel is committing genocide to create an ethnostate just like the Nazis did" I'm violating these guidelines in a number of ways despite this being purely political criticism leveled at the state and not at Jewish people.
They literally say the opposite, right in the paragraph I quoted at the top.
Yes, they give examples of criticizing Israel. But the point of the examples is that you a) can't apply standards unique to Israel, and b) if you do criticize the country, it's not fair game to extend it to an entire people.