Call for discussion: Signalling and/​vs. accomplishment

It seems to me that when people discover signalling, they see it everywhere and write essays about how no human activity is aimed at its stated purpose.

However, stated purposes and other sorts of useful work get done anyway, and I’m sure there are constraints which mostly keep signalling under enough control that it’s mostly not deadly. When I try to think about the subject, I don’t get anywhere, possibly because the constraints on signalling are mostly tacit.

Any thoughts or resources on the subject?