Is that a bad thing? I mean, I could probably BS something, but this strikes me as the kind of question that only an HR person would ask.

And yes, I'm already in the exact scenario you say I shouldn't be able to handle.

Who knows what random stuff will come up in an interview. I've worked at companies of all sizes and never received any guidance on interviewing, so questions swiped from internet headlines would come as no surprise. This is an old story around here.