No, what they mean is IQ/intelligence, just as they stated. Social class is part of the story, more so in the past than it is now, but it's not the entire story. High intelligence is a way out of upbringing and circumstances at the margins, when you can capture opportunities to escape. Tech jobs are filled with people who didn't come from higher social classes, many who suffered inequities during their childhood even from their social peers, but persevered due to having drive and intelligence.
Their argument is exactly what they stated, no hidden meaning here about social class. Not everything is class warfare.
Their argument is exactly what they stated, no hidden meaning here about social class. Not everything is class warfare.