You’re forgetting that when Strongheart and Breaburn wanted to talk things out, AJ and Dash decided to argue for them and stopped any chance of peace before they realized that they fucked up.
Rainbow Dash: We promised the buffalo a chance to talk.
Applejack: Oh, yeah? 'Bout what?
Rainbow Dash: We brought our new pal Little Strongheart here to explain to the Appleloosans why they should move the apple trees off buffalo land.
Braeburn: That information would be quite help–
Applejack: That's weird. 'Cause my cousin Braeburn here wants to explain to the buffalo why they should let the apple trees stay.
Little Strongheart: That would be a useful thing to–
Rainbow Dash: The land is theirs! You planted the trees not knowing that. Honest mistake. Now, you just gotta move 'em, that's all.
Braeburn: Well... heh...
Applejack: They busted their rumps here! An' now they're supposed ta bust their rumps again, just 'cause some buffalo won't stampede someplace else?
Rainbow Dash: Plant the trees somewhere else!
Applejack: Where?! It's the only flatland around these parts!
Rainbow Dash: The buffalo had it first!
Applejack: The settler ponies need it to live!
Rainbow Dash: Come on, Applejack!
Applejack: [over Rainbow Dash] You're bein' unreasonable!
Rainbow Dash: [over Applejack] I put my hoof down!
Twilight Sparkle: Look! Both the settlers and the buffalo have good reasons to use this land. There must be something we can do.
Pinkie Pie: Hey! I've got an idea!