I’ve never really found the Hansonian line about signaling to be particularly interesting.
On one hand, it’s obvious. On the other, signals are good way to make sure you avoid the wrong sorts of people. For example, some years I travel enough to obtain one of the highest frequent flyer statuses. The best part about having status is that you get to avoid the people who don’t travel often. Sure, status could be used to signal how awesome I am. But really, it’s just nice to get away from the plebes.