Sure there are other factors that affect long term rates. But if the Fed came out tomorrow and said "We promise to keep interest rates at 0 for the next 10 years" long term rates would drop considerably wouldn't you agree?
Not at all. Inflation expectations would soar. A few years ago and there talk was that keeping the overnight rate would lead to huge inflation issues. Now a strange narrative is appearing that nominal interest rates are simultaneously too and inflation going higher.
And there is no way they would be to keep that rate. They can say whatever they want, but that doesn't mean the overnight rate has to oblige them either. They only set a target, the actual rate is still determined in the bank to bank market and historically it does diverge, sometimes strongly.
