The implication here seems to be that the Chinese written word gives hints as to meaning, right? How can that be so, if 10 years of studying isn't enough to read a newspaper? Your claim would imply that reading in Chinese would be easier to pick up (compared to non-character languages), while speaking would be more difficult - one seemingly immediately shown to be false.
Not to mention that a language can both give hints to meaning and have a link between writing and speaking. At the very least, English does - the example closest to hand is that I've never heard the word ethnocentrism before, but I immediately understood it.
That said - great point about possibly overemphasizing the link between spoken and written words. From an English background, that seems like something so obviously important that it hardly bears thinking about, but clearly there could be other important considerations (even if I don't know what they might be).