You are stating as a matter of fact issues of great historiographical controversy. Your analysis of Mein Kampf is just wrong. Virtually every chapter of Mein Kampf is focused on Hitler’s ravings about Jews. Hitler did not believe that the French were significantly racially inferior to Aryans. As opposed to Slavs (except for Slovakia and Croatia), he allowed some of France self-government. There was never any plan to eliminate the French. There was no idea of the “French Question.”
Your argument that Hitler didn’t plan the Holocaust until later is called “functionalism” in historiography and is highly controversial.
Hitler never planned to kill all Slavs. They were to be largely killed and enslaved, as dictated by Generalplan Ost.
The idea that Jews were a secondary target to Hitler is pernicious nonsense. Antisemitism was Hitler’s great obsession.
Please back your assertions before morally denigrating others with such words as « pernicious ».
Did you read Mein kampf ?
Although Mein kampf is full of hate against jews, there is also hate against other so-called « inferior » races that can not be germanized because, to Hitler’s opinion, nationality is about blood and race and Poles, Hungarians, Czechs, ... etc, can not be turned into Germans, Mein kampf’s main purpose is not about jews.
Mein kampf was written by a German racist nationalist in the wake of Germany’s defeat in WW1.
The causes of defeat and the will and means to restore Germany is the issue of Mein kampf, through Hitler’s views.
Hitler does not propose extermination of jews in Mein kampf. And there is no historical material to prove that Hitler intended from the start to exterminate jews. The scholars’ consensus is that Hitler and nazis initially aimed to expel jews away from Germany through ever harsher discrimination and persecution.
But, Hitler expressly stated in Mein kampf that the eternal French-German conflict, which prevented Germany from conquering its vital space eastward that was necessary to make Germany a world power with the territorial critical mass to match the British empire, Russia, China, the US, could only be ended by suppressing France (chapters XIII and XIV of the second volume). For Hitler, that was the condition for Germany to achieve its political goal at the expense of the Slavs in Eastern Europe : building a 250 million German/Aryan people Reich by a century and subjecting « inferior » races to inferior legal positions.
Nazism was a racist racial nationalist Darwinism.
Hitler, the Nazis and Nazi Germany did not fight WW2 and cause the death of some 20 million Slavs, tziganes, ... etc, for the main purpose to exterminate 6 million jews.
Nazi hate of jews was more intense, more radical, than Nazi hate of other races. But the main goal of nazism was to establish German hegemony in Europe in order to turn Germany into a real world power.