It is certainly true that people over apply the label (just as the Left has described any disagreement as racist or various forms of "phobic"), however, that does not, actually, mean that anti-semitism is not a problem on the left, nor does it mean that the Left is not at least somewhat blind to it (see: thread, and your posts in particular).
No. Overuse of the accusation of anti-semitism is not in and of itself anti-semitic, any more than overuse of the accusation of ageism is itself ageism.
I don't recall the first of those statements, but it's certainly within character, and it's stupid. Just as it was stupid when Rashida Talib said the same thing about Jews and Money Biden stated that, if you didn't vote for him, you weren't black. All of them are stupid because all of those people are stupid, and say stupid things.
However, again, none of that is an actual response to the point that the worlds' oldest hatred didn't get that way by being inflexible, and anti-semitism (at
current) is worse on the Left in the West than it is on the Right. Nor is it a response to the fact that one main difference is that we are a bit more clear eyed about antisemitism when it occurs on the Right, but, the Left's self-perception of itself as being
defined by the notion that "they are the Good People", along with all kinds of ordinary tribalism and attribution error, relatively blinds them to evil in their movement.
But hey, you don't gotta take it from me. Take it from that famous right-wing rag, the, er,
New York Times
Natan Sharansky, the former Soviet dissident, has suggested a “3D” test for when criticism of Israel crosses into antisemitism, with the D’s being delegitimization, demonization and double standards. Progressive rhetoric has regularly failed that test in recent years. “Americans generally have greater ability to identify Jew hatred when it comes from the hard right and less ability and comfort to call out Jew hatred when it comes from the hard left or radical Islamism,” said Rachel Fish, an adviser to Brandeis University’s Presidential Initiative on Antisemitism.
Consider the double standard that leads to a fixation on Israel’s human rights record and little campus activism about the records of China, Russia, Sudan, Venezuela or almost any other country. Consider how often left-leaning groups suggest that the world’s one Jewish state should not exist and express admiration for Hamas, Hezbollah and the Houthis — Iran-backed terrorist groups that brag about murdering Jews. Consider how often people use “Zionist” as a slur — an echo of Soviet propaganda from the Cold War — and call for the exclusion of Zionists from public spaces. The definition of a Zionist is somebody who supports the existence of Israel....
Struggle Bussin, huh?