The post that inspired blogging that old JMS quote about fans and their limited frames of reference:
Can we talk for a moment on how much Bioware was inspired by Avatar: The Last Airbender?
Blood Magic? Bloodbending
Meteorite random encounter in DA:O that you can make into a sword? Sokka’s Space Sword from book 3
All of this and more came from Avatar, and Bioware adapted it for Dragon Age
And one of these things became one of the primary plot devices throughout the series.
So… yeah, OP’s perception is flawed due to his/her limited exposure to the works of fiction (and nonfiction) that predate and influence both IPs.