Considering that the halla are sacred animals to the Dalish (and even believed to deliver deceased elves into the afterife), it's quite a gesture. It may mean little to humans, but the halla mean a great deal to the People. The codex reads, "No creature is more revered by the Dalish than the halla. No other animal has a god of its own. These white stags are much larger than ordinary deer, and the Dalish halla keepers carve their antlers as they grow, making them curve into intricate designs. In ancient times, these stags bore elven knights into combat, but since the fall of the Dales, they are used less as mounts and more to pull the aravels."
So the Dalish view an entire village's worth of lives as less than that of a single animal?
And because Orlais clearly subscribes to the Dalish Gazette, there'll totes be a lot of Orlesians who would actually hear about and appreciate Dalish cultural shifts.
Not that anything of this nature could happen beyond this one clan until the next Arlathvhen.
It would stop the Dalish from continuing to keep relationships as hostile since they are no longer provoking and blaming people whose race wasn't the ones who got the elves in their current predicament.
Hawren's clan already addressed the truth - that humans and elves were both responsible for the inception of the war.
The Dales were the ones who started the aggravation between the two nations by being isolationist to the point where they sat idly by and watched while humans were devastated by the Second Blight for 90 years.
The Dales were the ones who lit the fuse of war by the massacring of the town of Red Crossing.
The Dales were the ones who escalated the war by invading Orlais and cutting a swath of chaos and carnage through innocent people.
And now the Dalish continue keeping relationships strained by blaming the people who didn't start any of the bad blood that occurred between them as doing so.
So pray tell, where are the humans at fault? Every action the humans made was a reaction to an action the Dales made.