Wouldn't be the first time "self-hating Jew" has been used to shut down any kind of anti-Zionist critique. Bernie Sanders had his face shoved in that turd all through 2016. I remember hearing it tossed around since at least the Bush Era, when being against the Iraq War was framed as a form of anti-Semitism.
I've already seen it. I think the common term is "self-hating Jew".
"anti-Semitism" used to be a term with a lot of weight and serious connotations. Now, it's been misused and abused so often that the power it once had is gone.
If anyone who disagrees with the genocidal far right government of Israel is an anti-semite then, of course, the term will lose it's power to shame actual bigots. It should surprise nobody that actual anti-jewish bigots are coming out of the shadows.