The 1985 study makes sense even in the common language, it’s the same reason you see pets coming into emergency when dumbasses feed them extremely spicy food, it’s the same thing as forcing them to have hard liquor, they’re not accustomed to it and didn’t choose to have it, spicy food is supposed to put them off from the food.
That’s not long term, that’s a contrived laboratory situation.
The study proves that cell death was induced in cortical neurons which were cultured from developing rats and then had capsaicin directly applied to the culture and associated substrate.
Applying the capsaicin every 6 hours to show detrimental effects.
So what that study proves is, if you’re willing to extract cortical neurons and apply spice directly to them then you’ll get cortical neuronal damage.
Not via the way a human would normally consume spicy foods.
That’s more than slightly mistaken. You’re making some stunning assumptions using studies that are barely related to the topic at hand.