If anything Powell is a more Establishment Yellen.
He’s listening to the Goldman Democrats in the WH.
MY only guide is I have read a lot of stuff on Yellen (had her head in the sand as the head of the Fed Bank in San Francisco in all the years leading up to and even right on the cusp of the housing bust and financial crisis. He horrible record is right there in the minutes of the federal reserve meetings. I n terms of insight into what was really going on with derivatives, subprime mortgages and the housing bubble she was totally no where to be found - denial, denial, denial the whole way.
That is my sole reason and yes it is a “any one but Yellen” reason.