I don’t really care I just find it hard to tell the age of a 16 year old anime character vs a 20 year old for example. They look the same. Children are different though and it’s pretty obvious when they’re a child unless they’re tall.
Looks that way but eh, with anime girls there's usually some backstory to pretend they're adults.
An argument could be made that they are petite framed 18/19 year olds, but they could also be like 14 for all I know anime styles are kinda weird like that.
By that rationale you can justify drawing just about anything. Could be literal babies. Doesn't matter, not real people.