They acclimate....slowly
I can eat hot but I notice with age I’m not as good at it as I once was
My wife eats Tabasco on everything....literally....she doesn’t eat dessert
Not even ice cream for dessert? (Very old joke.)
A latino buddy of mine never found a chile too hot for him to handle. He’d seek out the hottest varieties just to show off. Ghost peppers, Thai chiles, others that I’d never heard of. Covid got him earlier this year, I’m surprised that the chiles didn’t kill the virus first.