Why are "stablecoins" called stable when they are pegged to fiat currencies like the dollar?We know that the dollar isn’t truly stable ,it loses about 7 to 10% of its value annually due to inflation. More and more, we notice that with the same amount of dollars, we can buy less and less. For example, if you had $10,000 in 2020, nominally you still have $10,000 today, but its purchasing power is only about $6,800.Maybe they are considered “stable” only in terms of losing less purchasing power

Why are they called “stable” when they are actually unstable?