What if we were given another tiny race

[ItMe]

He's explicitly referring to young looking characters. Miq'ittens are quite literally Miqo children and exhibit very childlike features without even considering height.
Lalafells can't be mistaken for a child when viewed without other visual cues.

Yes he is.
We're just not in agreement on that Lala can't be mistaken for children without other visual cues.
I think the character creator is robust enough that you can make Lala look like toddlers if you want.
I know in my brief stint on Balmung I saw people doing exactly that and then using the /playdead emote to EPR with them.
And some of the Lala running around look (to me) like they came from some child beauty pageant.