I think they mean actual young girls instead of older women. I can see the point but I don’t think it would work and also child actors are terrible and encourage horrible stage parents.

Scootaloo’s first (proper) appearance: 7th of January 2011  
Madeleine Peters’ birthdate: 30th of March 1996  
Age at first appearance: 14 years old  
Current age: 17 years old
 
Sweetie Belle’s first (proper) appearance: 7th of January 2011  
Claire Corlett’s birthdate: 9th of July 1999  
Age at first appearance: 11 years old  
Current age: 14 years old
 
Apple Bloom’s first appearance: 10th of October 2010  
Michelle Creber’s birthdate: 7th of September 1999  
Age at first appearance: 11 years old  
Current age: 14 years old
 
Pretty sure they count as child actors.  
Excuse me while I have a five minute vomit.
 
Disclaimer: DOBs taken from Wikipedia, Episode Dates taken from mlp.wikia.com, so they may be slightly inaccurate.
 
(Also, first appearance refers to first voiced appearance. Background ponies in the first episode don’t count.)

I think Louise should be more immediately worried about her Jaundice.

But, most cartoon girls ARE voiced by actual girls! Actually, so are most boys, come to think of it.
 
And how would the character’s voice actor change how pedophiles would feel about them?
 
Explain, please

…They are voiced by girls.

What a charmingly quaint theory.
 
*Leaves to organize his CMC-centric clop folder.*