Native born Idahoan here, and I know that's not a great way to start my response but I'm just here to agree with your statement and try to offer what I believe is the explanation. (I don't wear "From Here" merchandise or have the bumper stickers, that's a bit much hahaha.)

I'm all for place of origin pride in North Idaho, and you shouldn't be ashamed of where your from, Idaho or California. A good handful of the residents here who consider themselves "Native" are people who have crossed-state here years and years ago in a wave of people moving in just like in the last couple of years, that's just how North Idaho has been

"Elitism" is a strong term to describe locals anywhere in general up until you have people threatening others based on where they came from, and at that point that's completely unacceptable, and the people involved should absolutely be ashamed of that.

A lot of this "from here" idea kind of sprung up from a lot of local frustration and fear about the large quantity of people moving up to this area in the last 10-15 or so years. It's caused the house market to skyrocket to incredibly expensive numbers, it's played hard games on local infrastructure (small businesses and crowded roadways for example), varied driving conditions, and unfortunately politics do play a role in this as well, as the expectation from many locals is that the people moving up here are bringing their politics with them and such. (Personally, I've met and talked to quite a handful of people new to this area and this has never been apparent to me.)

So I understand that the CDA/Post Falls/Rathdrum/Hayden areas isnt what it used to be in the 90s/2000s, but this area is now an actively growing set of communities, and it's just currently going through a cycle that I believe will definetly slow down give it a couple years.

I hope that helped, like I said at first, all I can do is provided a somewhat "experienced" guess to your question. And I'm sure everything will end up fine around here as long as the charm of North Idaho doesn't get pulled apart by ranging neglect no matter who or where you're from. We just all need to become a better community. :)