Because what he said doesn’t attack Jewish people for being Jewish.
Imo it’s minimising & prejudice.
It was a dumb thing to say but what he said suggests a government / intelligence organisation underperformed.
I wouldn’t say security services underperforming equals “allowing an attack so the gov can do what they want”. To me they are different things…
Even if it is a conspiracy theory it's not antisemitic to be suspicious. In the same way it's not anti American to have suspicions about 9/11 (which plenty of people do).
I don’t remember any MPs saying the American gov allowed the attack in the subsequent months?