I don't see how this isn't the filter still working. A polite end to the conversation and self-selection is just as useful to me as being scolded.

I've used the same test (simply reference Ayn Rand in a non-disparaging context when topical) and it's fantastic what the results are as far as actually finding independent, open, and prosocial people.

There's a narrow band of people that will actually give Rand a fair shot and treat her objectively without also mentioning that they're also in Mensa and into Agorism (the opposite and ironic red flags of slavishness to Objectivism).

With that narrow band of people you can have any conversation and explore any topic because they have their own thoughts! And I'd rather discover who is and isn't a member of that set early on.

In short, not a bug, will not fix.