How is this different for people from other countries with other currencies? they always buy toys with amounts high above the US dollar prices... Love that US only mentality, but it usually does not work that way in the rest of the world.

You misunderstand child development. This has nothing to do with a "US mentality."

In countries with high-denomination fiat, toddlers aren't calculating a 350,000 VND or 2,000 JPY price tag. They just beg for the toy. Parents might demand a random chore in return, but there is no numerical system for savings. The lesson of capital accumulation is absent.

Under hyperbitcoinization, local fiat disappears. A standard toy priced at $14 USD / €13 EUR / ¥100 CNY / ¥2,000 JPY / 350,000 VND collapses into a single network price based on the $120 Trillion M2:

 The SATS standard: ~233 sats.

 The NAHS standard: Exactly 10 nahs.

You cannot teach a 3-year-old in any country to earn 1 sat a day and save to 233. The number exceeds a toddler's cognitive limit, destroying the lesson of delayed gratification.

But a parent anywhere can teach this formula: 1 chore = 1 nah. 10 days = a 10-nah toy.

10 is a universal constant. Regardless of your current fiat currency, Nah•Sovereign•Diamond provides the mathematical UI to build low-time-preference children.