So we've reached the point where anti-PC crusades have morphed into mealy-mouthed lamentations of a time when talking about master races was acceptable, and uncritically repeating Nazi origin stories in an attempt at nuance. Cool cool cool.
He turned a country which was in crisis into one of the most powerful in the world (from 1932 to 1938 Germany's GDP went up 70%) with tremendous effectiveness.
This is Nazi propaganda. I am not calling you a Nazi, but I am saying this "Hitler saved the economy/Germany was in shambles" idea is a false and incredibly pervasive Nazi myth.
Before WW1, Germany was the strongest industrial power on the continent, but sandwiched between the French Empire which along with Belgium rivaled German industry, and the mammoth Russian Empire. After the war, Germany's industry and land was untouched while French and Belgian industry were ravaged. The Russian empire was rebuilding as the fledgling Soviet Union, and Austria-Hungary was broken up. To borrow a phrase from a German leader that actually built Germany up from nothing, in
realpolitik terms post WW1 Germany was situated to essentially amalgamate the most valuable regions of the German Empire and former Austro-Hungarian empires.
If we're going to talk about egregious treaties, let's first talk about the
treaty Germany signed with the fledgling Soviet Union which took up something like 30% of the Soviet industrial base and an amount of territory resembling Hitler's
lebensraum. In comparison, the territories taken from the German Empire after the war were short lived and recently won conquests, and the core of what at the time would be considered "Germany" remained intact. Germany's economy went in to shambles with everyone else during the Great Depression, and reparations payments stopped because Germany couldn't afford to pay, and neither France nor Britain were in a position to force them to. Versallies to the letter of the law was harsh but not egregious, and from the day it was signed the treaty was never actually followed to its full extent.
In the run-up to WW2, the German economy was beginning to recover pre-1933, and the Nazi economy "recovered" by...becoming a Nazi economy. They developed a policy of autarky, which is certainly a bold strategy for a leader about to fight against nearly every other great power on earth without access to critical oil and mineral resources. They "solved" unemployment by taking women and Jews out of the workplace, not through some miraculous economic insight. GDP increased but GDP increases does not mean wealth creation, they blew through Germany's currency and gold reserves to fund a military buildup, and still went to war with horse logistics.
He was able to unite a vast group of people under a common goal and in the process basically built the country up from virtually nothing in a few short years. I think that shows strong leadership. Ethical? Not at all.
When the treasuries ran dry, they annexed other states which kept the Ponzi scheme running. When they ran out of countries to annex they started invading countries to seize their treasuries and build up for an
apocalyptic war on the Eastern front . Even the vaunted German blitzkreig did not really happen as advertised. Britain and the US entered the war fully mechanized. Germany launched a genocidal war in Russia almost entirely supported by horse logistics. The Battle of France was fought by and large with Panzer I's, intended to be a training tank and not to see actual combat. They spent 7 years blowing through all the foreign reserves and gold they had to prepare for war, and weren't even materially prepared for war then.
So to sum it up, he burned through all the gold and foreign reserves on military equipment and built a house of cards economy that could only be sustained through conquest. He defeated and looted Poland, and defeated and looted France. He then got into a war with the three remaining great powers while still not having sovereign control over any oil or vital minerals for war production. The economy was a bizzare mix of private and public industry and the Nazi party, army, air force, and SS all fought over resources and Hitler forced his armies to waste scarce resources on harebrained wonder weapons a five year old would draw in math class.
At the end of WW1 and entering WW2, Germany was the most powerful country on the continent. By the end of WW2, Germany was was the 5th most powerful country in
Germany. Hitler's grand reich and genocidal Ponzi-scheme economy set out to exterminate Jews and Slavic peoples. By the end of the war it collapsed and half his country was occupied by Bolsheviks for fifty years. Indeed, his leadership was truly unparalleled.