This is a very disingenuous post.
It starts by badly misrepresenting what has been said and condemned as anti-Semitic.
It wasn't just the allegation that Israel was warned about Oct 7th. (And FYI security agencies, in all countries in the world including our own, get shit loads of warnings about impending attacks and they have to assess which are most credible. Its not an exact science and the fear of all agencies is that they will make a wrong call one day).
The anti-Semitism comes from the fact that Israel definitely knew an attack was coming and DELIBERATELY allowed it, so that they could destroy Gaza/ Palestine. As I said above, its this caricature of Jews as bloodthirsty and secretly collaborating behind the scenes, this reversal of Jews as victims to Jews as perpetrators, that makes it anti-Semitic.
Pointing out this anti-Semitism is legitimate and again, you are reversing Jew from victims to perpetrators when you try to shame them and label them as ' 'anti-democratic' for doing this.