The existence of camps where jews and other "undesirables" were kept for long periods of time disproves this entirely. The Nazi's were not trying to speed run the process. They were systematically eliminating people. That's why it's a genocide and not a series of massacres. I would suggest sticking with the definition of genocide instead of coming up with your own convenient version.

You're just showing your ignorance. The Nazis killed the majority of their victims as soon as they arrived in the camp. They kept 20%-30%, mostly men who could work, to be used as slaves for their military industry, and they eliminated everyone else. They developed gassing especially in order to speed up the killing and make it more economical.

It was a genocide because they tried to eliminate a specific ethnic group, for no other reason than its ethnicity.

You should go learn more about the subject, if it interests you so much.

It doesn’t interest them. People who think what Israel is doing is anything like what the Nazis did have had their brain washed clean by anti-Semitic propaganda. It’s smooth as a volleyball in there, facts don’t matter.