Yeah, I understand your point quite well. Many western countries do (or are trying to) conflate criticism of Israel and antisemitism, to create a chilling effect to protests against their own foreign policies on Israel and Israel's policies on Palestine ( see
https://politics.stackexchange.com/q/93431 ). But, like I said, while a government intent on persecuting will do so, they still have to deal with the courts too - as far as I know, no one has been successfully prosecuted under such laws.
> Quoting antisemitic publications for the purpose of agreeing with them is also antisemitism, not sure why you'd think it wouldn't be.
Not really. It would be the media outlet who would be liable as you are only simply repeating what they said in good faith.