IF you’re actually curios, it was because we used to import them, and the importers would dye them red due to discoloration in how they were harvested. Domestic production ramped up in the US and since pistachios didn’t have to travel as far, and because modern harvesting was more mechanized. It was easier to wash, dry, roast and salt them in a shorter time period avoiding the discoloration that required the dye in the first place.

So is a US defaultism kinda thing huh

I hate this idea of “us defaultism” being labeled on anything that even remotely involves the US. This isnt us defaultism, this is someone from the US sharing something about the US worded to be for someone for the US. I see this numerous different times with different topics for different countries, but I don’t go “oh this is German defaultism, oh this is Zimbabwean defaultism.” It’s a fun fact that you’re taking too seriously because you have a hate boner for the US, which is honestly fair.