I saw the news piece as well and wasn't as thrilled. I agree with the others concerned for the child's comfort and in my DS 3's case worried about hip displacement (He already has hip issues). Even the child in the segment couldn't get into the seat and decently place his legs, I know because I was watching to see what the little guy did. I know that for babies it's bad to put them in jumpers or baby bjorns where their hips are forced to be in an unnatural position for a prolonged period of time. If a child is scrunching to fit their legs while they sit in a car for a prolonged period of time I don't see a major difference. Yes a child could try to move their legs in the seat, but it wouldn't be an easy or natural movement.
For those that it works for, great, I just don't see us shifting my 3 year old right now.
My youngest DS, now 14 months, is still rear facing, and he will stay there until his legs get scrunched and he's contorting himself to be rear facing. Once he reaches that point I am still going to move him forward facing. I hope that this study stops parents from automatically facing their children forward when they turn one.
For those making it work til your child is older - good for you!