>This appalling lack of professionalism
I don't think anything about cock.li is meant to imbue professionalism.
I think one of the points is that it almost immunizes them from psychological operations. [1]
I know it sounds conspiratorial, but social justice movements in online communities can be easily leveraged by orgs like the NSA to disrupt an organization. Combined with anti-meritocracy ideals, it's easy to get someone "at the top" who doesn't have any credentials (and who isn't really trying to get there for any other reason than disruption).
It might not be his actual strategy, but the offensive things serve as a deterrent against lowest common denominator character assassinations. He has no reputation to destroy.