I'd cite this as an example of the deliberate disuse of pragmatics: resolving ambiguity by following a strict usage rule rather than choosing the most likely possibility as the speaker's intent. Klingons do have some strict usage rules, to be sure, and I'm not saying Klingons actually use
SIch this way - it was a question - but Klingons do need pragmatics in order to communicate effectively, which in turn can inform usage. I doubt one Klingon would deliberately misunderstand the other simply because of dropping the
-moH for brevity, unless there was a reason for strictness (like the case of the missing Oxford comma in the labor contract
https://www.nytimes.com/2017/03/16/us/oxford-comma-lawsuit.html).