Also, love the presentation on this page.
The glitches serve to remind them daily that their government is manipulating them.
The dilemma that China's leaders have is that they need an educated workforce, capable of logical and critical thinking, but they can't stop that workforce thinking critically outside work.
I suspect that the vast majority of Chinese viewers barely notice, or just assume that there was some sort of problem with the source material when it was imported into their country. Most probably don't make the connection that portions have been censored, because this is just what they've grown up with, and seems normal.
I think you both under- and over-estimate Chinese people in this regard. Certainly they are well-educated, but they've been raised culturally very differently than you or I. It's not impossible to be smart and know how to think, but also close off your mind to certain classes of criticism because you've been raised to value unity and harmony above other concerns.