Deploying Foxhole and ARO

[DustGod]

"When a miniature changes silhouette size, such as a Silhouette 2 Sniper becoming a Silhouette 3 foxhole, the enemy doesn't gain an ARO as a result of her change in shape."

Why does this not generate an ARO? 
My thought is because This:

"A trooper owned by the Reactive Player can declare an ARO if any of the following is true:

• It has Line of Fire (LoF) to a trooper being activated by the Active Player."

As no Action was Performed in LOS... no ARO can happen
From this thread under Light Infantry: Sappers

https://forum.corvusbelli.com/threads/the-shock-army-of-acontecimento-a-tactica.22582/

"Remember as well that you can change the location of your foxhole throughout the game. Need to redeploy? No problem, though digging a new foxhole will cost you an Order. Note though that you can prepare your foxholes before you engage a target. When a miniature changes silhouette size, such as a Silhouette 2 Sniper becoming a Silhouette 3 foxhole, the enemy doesn't gain an ARO as a result of her change in shape. This means thatyou can run up to a corner, still hiding from the enemy, then dig your Foxhole. With the change of silhouette size, you can use this to gain Line of Fire to your enemy, andthey won't be able to hit you with anunopposed shot. From there, with Partial Cover and Mimetism, you can spend a fresh Order to engage your target."

[Exile]

This is the correct interpretation of this rule.  Think of it like Antipersonnel mines - they are not "present" on the table until the end of the order in which you deployed them.