So we're told that the claim of their overrepresentation in so many places is nothing but a conspiracy theory. If it's not real then why do the actual numbers bear out the claim?

No, we're told that the idea Jews are coordinating to rule over us is a conspiracy theory. That's a very different claim.

Indians are overrepresented behind the wheels of taxis, the counters of convenience stores, and the phones of tech support call centers, but it's not an Indian conspiracy.

I believe there are Jews plotting to enslave us all - mostly because they openly admit it, and work in concert with non-jewish elites who have much the same goal - but it is a tiny elite minority of them, just as a tiny elite minority rules over any nation or creed. That's how things always are. Hitler's mistake was making the entire Jewish populace suffer instead of making an example of the actual movers and shakers at the top, who, unbelievably, he cut deals with and allowed to escape, whilst giving them a persecution story that they will use to shame Europe for the rest of time! Backwards-thinking moron.