Yes there is. The world is a strange and dangerous place - where we are forced to act upon imperfect information, knowing that our actions might make things worse rather than better.
It is perfectly legitimate to think that Hoover and Roosevelt made a mistake by intervening. It is not legitimate to criticize them for acting as they thought best. If you think you have a better way then try to get the nation to pursue it. It might turn out that your way is best...or it might not.
In other words, "they meant well." So, what? Hitler "meant well." "Meant well" doesn't count for squat.