Germany did manage to put up quite a fight, in WW2.
That certainly would have required some sound management. Not sure about what the Mein Kampf contains regarding those aspects, but I’ve read many here state that NASA’s greatest successes were when the Germans (NAZI- era scientists) were running the place.
I read Mein Kampf some time ago. As I recall it, it is mainly a frightening, paranoid description of Hitler's race theories and his plans for a future state. My guess is the Indians may actually be looking at his ideas of Aryan Supremacy and conflating that fantasy with the reality of their own background as “true” Indo-Aryans which, of course, has nothing in common with the Hitlerian fantasy of a Germanic Super-race.
If Hitler was as smart as he could have been he would gotten rid of the germ of Anti-Semitism. THAT would have given him Einstein and others. And he would have pushed ahead his plans to take over the world until his scientists had created more sophisticated military weaponry.
Fortunately for us, he didn't.