The situations which had made Elder Smith accustomed to the heartless and mercilessness was enough for him to have the idea of sacrifice but he never saw his brother doing the same thing so he also followed the same path. When Aaric was under his care, he never taught him to use people. Using people as a chess piece was one thing, and sacrificing their lives was another thing.
If you could not even keep your closed ones safe then what was the point of being in this field especially when these things have been forced down upon you. Elder Smith heavily implied one thing in Aaric's mind that even though this seat was for the one who would rule the world with the heart of stone but this was the throne if one used properly could heavily guard their loved ones.
When Remo heard Aaric's question he was stunned for a while. He did not know from where this sudden question would have come up in his brother's mind. However he immediately shook his head and denied.