I don't think you understood what I said. Yes, I think we should equate him with being a Nazi regardless if he was a member of the party. It's a pigeon hole that he fits into snuggly.
Then you can explain why, since not everyone who believes in cultural, ethnic and racial purity is a NAZI. At least not outside of Europe. I'll leave it up to you to enlighten us on that.
He was for Eugenics. A big topic in the 1920's and 1930'ies was the problem of social welfare, the advance of medicine, keeping alive those who nature would otherwise deem as unfit. This is a movement obsessed with racial purity. It was about sterilization of those deemed unfit to procreate.
Since we hadn't discovered DNA yet, we know today that it was all pseudo scientific mumbo jumbo. But they coached their feelings of ickyness and uncomfortability around anybody who wasn't seen as normal in medical terminology, as if they were diseases and cancers that needed to be expunged from the national body. These people were all convinced they were good people. They all saw themselves as the saviours of mankind.
That's what I mean when I call somebody a Nazi. It's short hand for this way of thinking.