Because the quote defines the manner in which they are respected, or rather, the respect for their labors as magical beasts of burden.
Because, much like many other societies present on Thedas, there is a difference in what they claim to do and what they actually do. It is disingenuous to claim that the Saarebas are somehow "shown the most respect" given all the examples we've been shown of their treatment within the Qunari, regardless of how the Qunari themselves might choose to describe it.
No, you're making that assumption based on whats been said. Im going off of whats been directly said by the Qunari themselves, not an assumption im making based on personal opinion.
You cant see any way the qunari can respect Saarebas therefore you've concluded that there is no way they respect them on any other level beyond their skill as weapons, when they've clearly shown that isnt the case.
All the treatments given to Saarebas are accepted by the Saarebas as a necessity to control their potential danger, thats why they are pitied and respected, thats beyond just respecting them for their labor. Again for a second time, i dont see why you're arguing this based only on personal assumptions and opinion when those arent facts, you're trying argue facts said by them.
If the qunari didnt respect them on a personal level, then they wouldnt have said otherwise, they arent one's for lying or sugar coating, when the qunari say something, they mean it, yey you insist that they meant something else only because you personally cant see it any other way than whatever perception you already have formed in your mind.