What the Fed actually said is that they need to raise interest rates to get inflation under control, even though that will likely cause greater unemployment. Various people twist this into the Fed saying that unemployment is the goal, instead of a negative side effect.
I don't know why people twist things in this way, but I've seen people repeatedly do so.
It is easy to understand that way. If people lose their jobs that will reduce demand which will reduce inflation. The goal of Fed is to reduce inflation and one way of getting there is to slow down the economy which causes more unemployment.
But Fed has another goal too which is preventing unemployment. They are in a twist.
I don't know why people twist things in this way, but I've seen people repeatedly do so.