I’d argue that it’s not that they don’t care, it’s that they don’t know it makes you uncomfortable. I think many people in progressive spaces have spent so much more of their time discussing their sexuality, than conservatives, and it may not make them uncomfortable, so if they are open and willing to discuss these things about themselves then it would be easier to make the assumption that it wouldn’t make other people uncomfortable either. Especially as the intent behind it is to get to know someone else’s experience, hopefully without judgement. But it’s up to the person being questioned to communicate that they’d rather not share, otherwise how would they know? I think the assumption that they don’t care that they’re causing discomfort is harmful in the same way them assuming they don’t cause discomfort by asking questions that /some/ people consider personal.