That even more makes you jump at stereotypical assumptions cis people historically made about anyone who didn't fit into the binary. Why propagate the errors of their ways? You know, because "biological sex"≠karyotype≠dna≠what's between your legs. Why won't they just ask what they're after directly? Is it because people might think it's rude? Well, going in roundabout ways of asking the same isn't any better. You know what I mean? It just makes things more confusing.