Earlier quoted context omitted.
You are confusing a “30 year mortgage” with a “30 year mortgage”. They sound the same, because they have the same term to repay the principal, but they are completely different because in the USA you usually know your repayments for the next 30 years, but in many other countries the repayments can go up a lot if interest rates rise. In the USA, the usual mortgage has a fixed interest rate for the term of the mortgage…
> confusing a “30 year mortgage” with a “30 year mortgage” No need for confusing naming. You're talking about fixed rate, variable rate and short period fixed rate mortgages.
Weird!