I think you're underestimating the extent to which if the US establishment decides AIPAC is a problem for its own interests they can destroy its influence overnight. Especially with weakened democratic norms and checks and balances, no group, no matter how well connected can be safe from an unhinged executive acting in the name of "saving the country". If AIPAC becomes a problem to them, if it no longer serves them, they will deal with it. Similar to how whoever doesn't play nice with Putin meets various kinds of windows.

It is not an accident that a part of the MAGAsphere has already pivoted against Israel. And remember that the fascists have no actual solutions to anything, just an infinite progression of "purification". They would have zero qualms about going full antisemite within the US if it suited them. And when that time comes, the Zionists will experience the actual difference between antisemitism and antizionism in practice.