If you are not willing to be civil, face the consequences.
The discussion is about the consequences, not whether people are ready to face them.
I've seen first hand that telling somebody things in a 'professional' way allows them to dismiss it and fuck up almost identically the next time. Get angry at them and they sure as hell will remember. Now if you get angry without good reason, they will remember you for being an unreasonable asshole. If you get angry with good reason, they tend to get their shit together because they will try to prevent people from being angry at them when it is demonstrably their fault and something they can reasonably change.
Anger and strong wording conveys importance very primitively and directly. It is up to the speaker to decide what amount of power should be put into his/her message. I believe this is the thing that most often goes wrong. Things that aren't that important are too often brought as if they are, with the associated amount of verbal and emotional power. In addition to that, the speaker and listener have different associations of how powerful certain words and phrasings are. Fuck is a word that means little to me (dare I say fuck-all), but some people get really offended by it. This is more of a shared responsibility, as both speaker and listener need to garner an understanding of what certain words mean for the other.
Alternatively, you could approach this from the 'real men' (I prefer 'confident adults') side: in my experience, the people who don't throw a hissyfit about being talked to strongly are definitely the most reliable and capable people, willing to change their ways. These are people who care about the reasoning, not the words. About the function and not the form. The extreme ones are almost completely impervious to and unmoved by any swearing whatsoever. I see that as a huge asset.