Apparently, you are so sensitive that strong language obscures your ability to understand the message. Because there are people like you, it was a mistake for Trump to use the language he did. I doubt it will happen again. However, there are many who are not so easily "scandalized" who could easily see that it was not just Trump's language that was strong, it was also his message. This is why they like Trump.
Interestingly, on last nights Fox Business Networks Nightly Scoreboard, an unabashedly conservative program, a viewer poll showed a perfect split on how people felt about Trumps speech.
Actually, "strong language" as you put it, in a public settings, gives a discerning listener good reason to discount whatever message is being delivered. The speaker is advertising for all to hear that he/she can't effectively form a rational argument or use the language properly. So why should a thinking person give such a speaker any credibility?
The ability to use the F-bomb as a substitute for every noun, verb, adjective, and adverb is no sign of intelligence. It just demonstrates a limited vocabulary. It is often the identifying characteristic of a leftist idiot, since the speaker is advertising his disdain for polite society and norms that allow a free society to function smoothly.
It's no coincidence that you can use the f word, the c word all day long on DU and nobody will mind, but the same thing will get you yanked and banned here. They are barbarians and fools. We, with the obvious exception of the blog police, are not.