Well I think he was actually spot-on. But this was decades ago. Those people and these tactics have led to a lot of idiots. Those idiots make up the majority of the antisemites these days. You’re right that they’re not consciously running these tactics, but they are just parroting the grifters and conmen the Sartre was speaking of.
They’re despicable, but those kinds of people are smart. However, the mental offspring they shed like dandruff are the idiots you’re thinking of. They don’t do these things with any kind of cognizance. They just live in it. They’re the feeder-stock plugged into The 24hr Fear, and those talking heads employ these tactics. The idiots just emulate.