In therms of rule, that depends if you hardened Alistair or not. And either way, Alistair ten years down the line is quite a different kettle of fish to what he was in DAO - you can see that from the larger cameo he has as a Warden if nothing else.
Do you mean Alistair or Eamon being a bad person? Eamon is a tool for sure, but you can't judge anyone based on their entire family.
I'm not like Alistair, I'm not judging anyone for its bloodline, Connor may be free from my assessment, and Teagan was free from it....until now, but the rest, their actions put them under such assessment, Eamon for obvious reasons, Isolde hired a blood mage to keep his son out of the Circle, Alistair is the sole dude on history that rage quits from Wardens for a tantrum, even when there is a cursed Archdeamon threatening the country, Fiona started a war without even knowing how to fight it, then she's gave Redcliffe to the Venatori because of idiocy and fear, so no, I'm not judging them for belong to that family, I'm judging their actions.
Also, what!!? Eamon is not a tool, Eamon is the kind of person that use others as tool.