These aren’t social clubs, they’re organizations of humans dedicated to building software. Telling jokes in e.g. an issue task or a project mailing list wastes everyone’s time. And why would you be having to filter in the first place?
FOSS software projects are social clubs. They're endeavors undertaken willfully, voluntarily, usually without any expectation of financial compensation, out of personal interest. They have a goal, yes, but at the end of the day people get involved because it's fun, and they're trying to have fun and do something they think is cool. Telling someone they can't share a winkyface in chat is offputting to I'd say most talented people that do this sort of thing out of personal interest. I don't think it's a coincidence that we see alongside this rise on CoCs a rise of frustratingly hostile user experience in software.
