@grrrr_shark

Something gave me a weird vibe there, but couldn't put my finger on what was it until now.

I'm not sure whether they want to say that _among couples that (presumably) used these traits to select each other_ survival is independent of them, or that distribution of (pairs of) these traits in surviving couples is indistinguishable from distribution of these traits in strangers.

If former, this doesn't mean that these traits are irrelevant: just that they are no more relevant than the normal selection process.