Singapore itself is an Israeli ally and has been trying to frame the whole war as just a case of racial and religious disagreement rather than colonialism. It is also participating in Operation Prosperity Garden (the US-backed operation to stop Ansar Allah from enforcing the red sea blockade on Israel). I feel for the charity workers. The government’s hands however are stained with both Palestinian and Singaporean blood.
Saying “leave if you don’t like your country’s imperialism” is no different from saying “anyone who are not as racist as me should go kill themselves”.