If Hitler really wanted to exterminate the jews, all he had to do was to copy what the jews did against the Ukranians in the Holodomor. At the height of the Holodomor, 80,000 Ukranians were murdered through starvation every day for an entire month and this was without the need to have large multiple camps with gas chambers and furnances. Surely, Hitler would've taken some notes if his goal was to get rid of the jews as fast and as effectively as possible. It would've been poetic justice as well.