Possible.
A few decades ago, I met an extremely well-educated guy who was, in fact, from Germany (if not him, then his parents). He fully believed the Holocaust was a myth, most Jews died of disease not related to gas chambers and ovens, and that the # was far lower than 6 million. He had no problem telling everyone all about it, either.
In a related story, he was arrested and charged with a felony for stealing Nazi war items from the WWII memorial downtown, was fired from a job for not reporting the charges on his application, and later, was publicly (story in newspaper) released from his position as a college history teacher for espousing his revisionist bullshit in class and being recorded by the students.
I don't think it was Masa.