No, it does not matter if they were peasants or not. Murder is murder. However, the statement “he has to stop killing peasants” sounds like he kills peasants every month or something, while in reality, he HAS killed some innocent people centuries ago, and hasn’t done it since.
“he used the dagger to kill soldiers” snow and charming killed countless soldiers on screen. so did many heroes on this show. Does it matter what dagger or sword they used? This whole “heroes don’t kill” is one big joke on this show. He used the dagger to kill the dangerous kidnappers who sacrificed children to the Ogres.
Excalibur has everything to do with the dagger. It was refused with the dagger before he pulled it out of the rock. You said it. You need both, or rather, you have to have both: you can’t have one without the other. Just because the blue fairy possesses “light” magic, doesn’t mean she isn’t bad or won’t use it for bad puposes.
No, the dark one does not necessarily mean dangerous. A zombie!DarkOne would be dangerous. And that’s what he warned Regina about and that’s what he wanted to protect Belle from when he gave her the dagger before he collapsed and told her to go with Will. He DID try to give his wife the dagger. He tried very hard. He stopped trying after that story with the snow queen.