Torgal Mount, please let it scale to the character, thank you.

[Allegor]

When you get your own chocobo, it's fairly safe to assume that chocobos as an animal come in different sizes, and thus your character picked a chocobo that was suited to their size.

However, Torgal is not a breed of animal; he's one specific animal. I presume that's why the devs made his size constant, because Torgal has a canonical size and thus shouldn't change height based on his proximity to another creature's nethers.

The real Torgal has a canon size, but the Torgal mount is a construct the wandering minstrel (somehow) created specifically for us, it should have scale with race.

PS: yes, it's stated different sizes of chocos are specifically bred to accomodate Lalas and Roes.