This user claims that Hitler was, somehow, "progressive", and that progressivism "taken to the extreme" apparently leads to fascism. They also appear to be not differentiating between "utopianism" and "progressivism"- it appears to be a common misunderstanding at least among the right in the U.S. that progressivism is in some way utopian. I was wondering what the other problems with their comment may be.
I am not trying to stifle further discussion, but a search for "hitler socialism" returns many discussions about the ideological orientation of National Socialism in Germany.
One thing I can think of, he was a firm believer in meritocracy. He believed that any true German should be able to attain any post based on their ability. While this probably seems self evident now, early in the last century classism was still very powerful.
Source is the two part Ian Kershaw biography of Hitler.
That, in my mind, is progressive. I'm not sure how the author of that post squares the desire to rid Europe of Jews with the idea of progressiveness.