Can you refute their points more directly?

First, there is no IQ barrier. I have several friends who, based on psychologist-administered IQ tests, are very, very close to average, who do well in the industry, usually better than me. They worked hard to get where they wanted to go. Sure, you probably can't do this work if you have an IQ under 85, but the same can be said for most any knowledge or even office job. It's not like we're unique in that regard.

Second, a "genetic bottleneck"? That absolutely reeks of genetic elitism. It implies, rather heavily, that they are genetically superior to those who cannot (or just don't) do this work.

The idea that we are special because no one understands us - finance, biotech, pharmaceuticals... No one really gets those, either.

Thank you