The idea that you've got to be some sort of obsessive wretch with no life outside of tech in order to successfully fill a role at a tech company is nothing but a pernicious myth. So is the idea that you've got to be some ridiculous super-genius. All you have to do is be reasonably smart and capable of learning on the job.
When interviewers at tech companies mistakenly believe that every successful candidate has to be building atom smashers in their spare time, and especially when interviewers at tech companies unconsciously favor candidates that match what their 'stereotypical' candidate looks like, well, then you get a situation like the one described in the article. But this isn't natural or normal or a product of biology - it's just bias perpetuating itself.
When interviewers at tech companies mistakenly believe that every successful candidate has to be building atom smashers in their spare time, and especially when interviewers at tech companies unconsciously favor candidates that match what their 'stereotypical' candidate looks like, well, then you get a situation like the one described in the article. But this isn't natural or normal or a product of biology - it's just bias perpetuating itself.