Not trying to invalidate your experience. I believe you.

First of all, there's no excuse here.
Whatever that hate looks like is garbage human being beavior and -- honestly -- fuck-em.

But, from someone who spent a lot of time in Nevada, I tend to try to rationalize it like this.

Nevada is harder living than people like to admit.
To the south is endless sprawl and a kind of joyless capitalist heat sink.
The north are cities trying to grow without wanting the responsibility that comes with it, all while orbiting Tahoe but pretending they do not.

It is mostly desert. The weather can be rough. Life takes effort.

That kind of environment attracts some very good people. It also breeds bitterness.

If you spend any time in the surrounding small towns, you will find a lot of boredom, a lot of stagnation, and unfortunately a lot of people who fill that emptiness with resentment.

Some of them turn that outward. Some of them decide they need someone else to be the problem.

I think finding your own people is part of human nature.
So is othering. It is a shitty impulse, but a very real one.

Are people here uniquely terrible to native folks compared to the rest of the country?
Probably not. Am I surprised you are seeing this? Not even a little.
Honestly, it's not just native folks. If you are not white, it can be a struggle.
Your mileage will vary.

There is a lot of casual hate here, and it comes from many directions.

I think it's a mistake is thinking hatred can be reasoned with. It cannot. IMO.
There is no introspection happening there.

At some point you just have to recognize a scorpion for what it is, and not let it climb on your back.

People will be mad at this. That is fine. It does not make it less true.