Events like this make me somewhat sceptical that "setting the bar a little higher" is good for anything other than egos. I have never heard road authorities advocating setting the bar higher in the interest of road safety. If you only sail with racers or old salts, sure, but if you have to rely on casual visitors, perhaps... but OK, nobobody agrees
While I see your problem, I also see the remedy as being in training and in experience. Whether the English or the Norwegian terms are used, every seafaring European language appears to have a similar set of ultra-specific set of directions (geared to the "moving frame of reference of the boat itself), names of boat parts, names of lines (the same line can have different names at different times dependent upon its function, like lee and weather sheet), and so on. Nautical language, when mastered, is remarkably unambiguous, and when working the boat in frequently noisy and wet conditions, ambiguity is a powerful enemy.
Practice makes perfect and practice also makes clear (to me, at least) the beautiful specificity of nautical language, a critical function not only in the historical days of sail, in which knowing the names of lines and what to do with them could mean life or death, but today, where the helmsman cannot always see ahead or is available to diagnose a tangle or a wrap.
I think the cure is found in racing, where there is a strong action-reaction correspondence between an order given and a change in the boat's direction or speed. My wife and I club raced for five seasons and are among those people who cruise using language straight out of HMS Victory
. We do this not out of snobbery, love of archaic language or to prove how seamanlike we are, but simply because it works. To run a 40 foot boat requires, after all, only about 20 terms and related concepts, and my use of "abaft" and "athwart" is relatively rare. Our use of "lead the portside stays'l halyard to the well and tie it to the headboard" or "lash jacklines to the bollards on the high side" is fairly common, however, and is more economical a mode of speech than almost anything else.
So when I said the "bar was a little higher", I meant that if an aspiring sailor cannot or will not master these terms, perhaps they should consider a different hobby than sailing. After all, when I get a 50-pointer in darts, I don't shout "Red cork dot!"...I shout "bullseye!" If that's confusing, perhaps one is too stupid to play with sharp little metal and plastic arrows for sport.