When the impossible goal is to solve a 10x hard problem in 1x time live during an oral exam, no. But it did have a filter effect, so that the Jewish students who did pass the entrance test were much higher ability than their average peers.
I doubt it. Those problems are close to impossible to solve for ordinary students, therefore many talented but not necessarily genius students lost the opportunity to get good education. I'm a firm believer that students need to be pushed to stay in their discomfort zone, but Jewish Problems can easily push most students into panic zone.
1. They're an entrance exam. They were explicitly designed to discriminiate against otherwise worthy candidates.
2. The key feature of the problems is that they are not difficult because they are an average example of a difficult branch of math. Instead they are easy problems, but they are only easy if you can figure out the correct substitution. Otherwise, they are extremely difficult. In other words, getting good at the problems won't make you a better mathematician, it'll just make you better at passing that particular test.
I was only agreeing with the parent that students need to pushed out of their comfort zone, but just a little. Not a lot like the Jewish Problems were doing.
The interesting part of thost problems is that once you learn how to answer one, you can answer almost all of them. Of course, that was the issue, the answer wouldn't be accepted. It was a shame these problems were used in that manner.
I think the parent comment meant to say that once you see the answer to one of the questions, the question seems easy and simple in retrospect (i.e. the questions are NP hard, in a certain respect).
That's the fact that is usually touted in regards to these questions.
Which is funny because we could say the same about competitions like Putnam, but that doesn't make Putnam any easier. But that's the problems with solutions, they are elegant and obvious, but only after the fact. Competition problems are explicitly created to be like that. These problems similarly, but because they could show a simple solution you can "justify" the racial exclusion.
These were used when Jewish people were trying to get into grad school in Russia in the '70's. Basically designed so Jewish people wouldn't get in.
[0] https://arxiv.org/abs/1110.1556