“Ya’ll” is the spelling used by carpetbagger poseurs.

Wow. Way to pick a hill.

It's not worth a fight, but I can confirm I've only seen "ya'll" written by non-southern or Appalachian residents. I'm not saying it doesn't happen or shouldn't happen, but it would make me wonder about whether someone has adopted the word as a choice vs. it being just a word in their normal vocabulary.

It’s funny to think I’m picking a hill, just by pointing out an observation. It seems like hyperbole to say my comment was picking a hill to die on.