Pretty much everyone, everywhere on the political spectrum, irrespective of what they think about deflation, agrees that the depression was made worse by "all the ham fisted attempts to fix it".

There's some disagreement about which of the particular policy responses fall into the category of "ham fisted attempts", sure, but the Fed's initial deflationary policy is one of the most widely accepted (I mean, its a point on which Keynesians and Hayek agree.)