"He did nothing to end the Depression."
He sure did, he negotiated the bombing of Pearl Harbor and got us into war. Without the attack on Pearl the american people wouldn't allow us to enter the war in europe. His plan succeded, sorry to say.
Conventional macro-econ wisdom for decades has been that the depression was ended by WWII's massive deficit spending that restored liquidity. If you believe that then you have to also believe that FDR was on the right track but should've done it more. Everyone used to see it this way-- including a my rightwing Econ 1A prof in the '60's. OTOH, the whole point of this article is that deficit spending only made the economy worse and it was other factors that saved us.
My econ prof pointed out back then that viewpoints were bound to change over time, especially about FDR. He described an old farmer who hated FDR and used to say "I just wished I could've shoved my arm down his throat, grabbed his balls from the inside, and pulled the bastard inside out!"
People had real strong feelings one way or the other about FDR back then.