I don’t doubt it but wasn’t Hitler already an antisemite and a nasty piece of work in the 1920s?
He may have found validation for his hate in Ford’s publication but was it his inspiration?
I would say your interpretation is correct. Hitler had some crackpot pet “scientist” as his official scribbler on the subject, but we know that that guy found ample material in the writings of Margaret Sanger, Henry Ford, and Oliver Wendell Homes.