I can see it.

The purpose of swearing, as it applies to primates, is suggested to be an additional channel of communication indicating types of danger (can't find the paper to link to, damnit). This includes a general "unknown" danger, as opposed to a directional danger from the ground or air. So the dispense of social norms (saying fuck a lot) to be more communicative is somewhat antithetical to sociopathic mimicry behavior, where you want to be more social nomative to achieve your predatory/anti-social goals.

The baseline of how much swearing is customary varies by context (social class, profession, etc). It appears e.g. that swearing is quite common in Wall Street trading culture — not an environment known for a particular commitment to honesty.