WWII would have been far easier if the USA actually attacked Japan first. If the USA declared war when Britain / France did in the late 30s, then France may have not been overrun by the Germans. Maybe we wouldn't have needed to land in Normandy Beach.
I don't think anybody would look at the events of the next 10-years after 1933, and consider that war to be a "Racket". Nazis were evil. Imperial Japan, was evil.
By delaying our entry into the war for years, France was wiped out, and Japan sunk many battleships in a surprise attack. USA got lucky that our carriers were out on a training mission: if we lost our Carriers at Pearl Harbor, Japan may have very well won the war.
US had 3 carriers stationed there: USS Enterprise, USS Lexington, and USS Saratoga. All unharmed in Pearl Harbor, because they were elsewhere. And critical to the battles to come. USA won by the skin of its teeth, shear luck that our best ships were elsewhere during the surprise attack.
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US Pacific Fleet was composed of ~200 ships, ~18 of which were lost in the Pearl Harbor attack. The singular attack wiped out 10% of the US Pacific Power, WWII would have been far easier if US Declared war on Japan.
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If USA helped defend France in 1939, then the incredibly deadly Normandy Beach invasion would have been unnecessary. It was due to our failure to fight against the Nazis / Japan that France fell, and many more lives were needed to reclaim that territory.