Re: (Possible Spoiler) Clip#3 'I Allow It': Kirk and Harrison.
I could imagine that they probably sincerely wanted to. Alas, if Argo taught us anything, it's that dropping the F-bomb gets you an R rating in the US, which wouldn't be good for ticket sales.
Even just the one? Valkyrie got away with it.
Lifting to make a Klingon feel inadequate.