Rear facing longer than 2yrs

Briana
A woman on my fb is being rediculous about prolonged rear facing, there is a new law in ak (don't know if it's national or not) that a child must rear face till 2yrs old and 4'9". I personally plan on rear facing my children till they are at least 6 unless they do not meet the 4'9" regulated by laws in my state. What do you ladies think?