The interview is there to provide more information about a possible relationship. Winning an interview is like winning a date (assuming you want a relationship with the other person.).

A special kind of dating where money are involved.

If I were the interviewee and discovered it was a poor fit, I’d consider the lack of an offer or the opportunity to refuse one a win

Granted, this is tech, so finding a paying job isn't too terrible. But with a lot of other industries [0] it takes a long time and a lot of effort to get employment. I'd say for most US workers, even in today's market, not getting the job is a loss.

[0] which is not really super relevant to this discussion, I know.