[firephonestival]

IME it depends on the hiring funnel.

It does not matter if you are interviewing for an opening which has been set aside for you. (Niche skills, nepotism, former colleagues, etc.)

It does matter if you are going for a fungible position with many applicants. Not a lot, but people are biased to hire others who they think they'd enjoy spending time around.

That bias helps attractive people, as well as people who look and act like part of an org's "in-group" (if one exists). It's ugly and gross, but it seems pretty fundamental to human nature.