I’d love for them to show photos of even 50th percentile children of 12-24 months, showing how they would fit into a rear-facing child seat. Not to mention how parents are supposed to get them in and out (such as when sleeping). It’s a back-breaking contortionist exercise already.
Heck, my 10 month old grand son is in the 97th percentile for height and weight, down from the 98th percentile. I don’t think he is going to be able to stay back-facing much longer.