"...hysteria about protecting children these days..."
Exactly.
These damn baby seats are treating them like babies and a 5 yo does not need to be stuck in a bunch of straps.
I am BETTING the 5yo has the deluxe booster seat, which looks just like the real serious toddler seat (i.e., looks like a miniature portable legless chair). He has to know how to not only reach around to unbuckle, but to get the strap out of the nooks all over the chair (often includes cup holder!). If you dont show them, its kind of confusing.
We got just plain booster seats for our son when he was old enough for the nanny-staters. These are cheap and simple, literally only the bottom, and the strap easily comes off. The child can easily manipulate the shoulder strap.
Im sick of these safety NAZIs who just create another real problem when solving another possible problem.