Having a sense of humour is not frowned upon here.
Posting low-effort cookie-cutter jokes is frowned upon here, because (1) they usually aren't actually very funny and (2) empirically it seems that communities where that sort of joking is popular are at risk of having it take over until there is nothing but low-effort cookie-cutter jokes.
> empirically it seems that communities where that sort of joking is popular are at risk of having it take over until there is nothing but low-effort cookie-cutter jokes.
That also seems to be true of memes, trolling, and political propagandizing. Any forum where these things are allowed quickly becomes nothing but these things.
Posting low-effort cookie-cutter jokes is frowned upon here, because (1) they usually aren't actually very funny and (2) empirically it seems that communities where that sort of joking is popular are at risk of having it take over until there is nothing but low-effort cookie-cutter jokes.