[ygra]

It's very common to see ”Hello World” in LaTeX-written documents. The problem in my eyes is often that well-meaning people tell others that LaTeX will automagically make your document look good and professional, yet neglect to point out that you still have to know the details to achieve that. Proper quotes, proper usage of non-breaking spaces, proper hyphenation when the default breaks down, etc. are all things you have to consider regardless of the application. LaTeX may have nicer default styles and a few superiour algorithms (e.g. line breaking for justified text), but overall result quality for people without any clue is in my experience not higher than with Word.