Earlier quoted context omitted.
Just because other fields or companies do something doesn’t mean they’re not problematic. You might be living off of selection bias. I know for a fact that people in my area discriminate based upon where people are from. If they know you’re from a certain area, they have a particular disdain for you from the get go. So, don’t rule it out as being a real thing.
If you have a problem with people discriminating on place of origin, telling them not to ask where somebody is from is not the answer.
You're not going to somehow convert these folks to not be discriminatory overnight or even in a few years (as evident from HN). It will be something that will require a lifetime of work and more than just HR doing something.
HR is there to just prevent the assholes from being able to outright do it in the public eye and then the company being held liable for jackass clearly discriminating based upon where the person is from. If you never ask the question and the employee decides to not hire because, "seems like she's from Missouri, never did like those Kansas City Chiefs. Fuck 'em!" Well, employee and company can't be held liable for that decision because only the employee knows they discriminated for that reason and no one else does. But you ask the question - opens the box.