It's besides the point because Musk's targeting of the ADL occurs while he also boosts anti-semitism on his platform.
>As for the accountability, it seems obvious to me that if accusing a Jewish organisation of wrongdoing automatically exposes you to such a terrible suspicion as that of making antisemitic dogwhistles, then these organisations get free rein to say whatever they want because even challenging them produces an unacceptable reputational damage.
I'm not sure how they are any less accountable than he is. If he wants to sue them, he can. There is nothing stopping that because the ADL is a Jewish organization. What accountability do you think there is aside from that? The ADL can't force anything to happen, they can just advocate for their side as he does.
You are being purposefully obtuse. Musk isn't being called an antisemite because he's singled-out the ADL, it's because he's amplified antisemitism and doesn't seem to care about it.