People don't say "I call for the destruction of Israel", they say stuff like "A state that does that shouldn't exist" or "let's create a nation in which the Palestinians can live peacefully". These are 'calls' for the end of the current government structure of Israel, or in other words, the destruction of the Israeli state.
The wording of the rule is purposely vague and broad, while still sounds like it is banning something harmful.
People are being specific, but the rule itself is broad. If you say "everyone involved in the genocide should be removed from office", that's specific, clear, broadly agreeable, and yet also 'calling for the destruction of the Israeli state'.
You can require everyone to maintain their own blocklist, sure. But new users won't benefit from it. Making every single person individually investigate and judge every single bad user/community doesn't seem practical?