[chaosharmonic]

If an interviewer, who has the power to deny you a job unless your answers are satisfactory to them, is unprofessional enough to abuse that by pressing you for inappropriate personal details during the interview, then there actually is no correct answer.

You can't assume that person is going to act in good faith about anything else in that situation, so even refusing to take the bait is still ultimately a roulette wheel that can just as easily be labeled as "difficult" or "combative."

If it would be unprofessional to bring those things up freely, then it's actually more unprofessional to coerce people about them as a screening criteria -- whether that's coercing them into putting on a show of dancing around the issues, or coercing them into giving you honest answers.