If you assume that people won't care, then eventually they won't care as laziness breeds laziness. Every time you think that people won't notice, you're just giving yourself an excuse.
Such is the nature of Robert Rodriguez's work as the years go by.
The other side of this is the prevalence of misinformation in movies and its potential danger. Like it or not, films have tremendous power and influence over a lot of people, and every time these misrepresent something - whether it be history, science or cultural - they shape or reinforce views. Thus if the information retrieved is false or incomplete, the damage can be irrevocable (first impressions tending to persist).
This is generally how I feel about the sad state of affairs that is spelling and grammar, but I digress.
Getting on topic about the actual film, the panel talks about the flashbacks with the love interests as children, thus establishing their relationship and how much they love each other, and how you don't need those scenes because you can easily get all of that across in their interactions as adults.
For me, Elysium pulls this kind of crap IMMEDIATELY. It opens with info-text, explaining how bad things are on Earth and then SHOWS us the poverty-stricken conditions people are living in. The next thing we see is more info-text, telling us about the privileged, ring-world of Elysium, in space. Then, they SHOW IT! I don't know if this was a studio mandate or a pre-existing thing in the script but much like the theatrical cuts of Blade Runner, Dark City and Looper, this film treats the audience like they're dumber than soup mix, with opening info-dumps via text or narration that we don't need because THAT'S WHAT THE MOVIE IS FOR! THEY'RE CALLED MOTION PICTURES FOR A REASON! Or, in short, SHOW DON'T TELL!
I think that's one of Elysium's core problems. It's redundant as all hell. That's why the Mini-Boss gets killed, only to be resurrected so he can BE KILLED AGAIN! And for what? Michael Bay's version of Mike Tyson's Punch-Out? Oh, and swords! Don't forget swords! It's that mentality that a lot of filmmakers have these days (Robert Rodriguez, Edgar Wright, Paul W.S. Anderson, McG, Michael Bay, etc.), where they're so obsessed with doing things because it's cool or clever, they stop worrying about what's necessary or practical for the sake of their characters, story and plot.
Hopefully, this will just be a case of the Sophomore Slump for Blomkamp and his next venture will lean more towards smart, insightful science fiction and he can fulfill the promise he showed with District 9.