That's partly why this is such an effective tactic for Israeli (government or private) intelligence. The presence, or mere accusation, of anti-Israeli government sentiment can be pretty easily spun into accusations of anti-Israeli and/or anti-Semitic beliefs. So it can kind of create a chilling effect on these discussions in general, like in this comment sub-thread. There are so many outlandish conspiracy theories out there about Israel and Jewish people that they can group you in with those types of people and paint you as a kook or bigot when there actually is some merit behind a theory.

There's always a middleground. Never forget that a country's government and intelligence services are not its people. Just as someone criticizing the NSA or CIA or Blackwater shouldn't be assumed to hate Americans, someone criticizing Mossad or Black Cube shouldn't be assumed to hate Israeli or Jewish people.