Bernie is clearly not someone who would be considered a fascist or nazi but his positions from 2016 expressed now would label him as such by the section of the population who jump straight to that nomenclature.
Your comment about Sanders might be true (although I doubt that he would espouse the same views as articulated in DHH's blog post https://world.hey.com/dhh/as-i-remember-london-e7d38e64) but it does not add anything to the discussion here, which is why I mentioned whataboutism.
EDIT: and now I re-read the post you were replying to which was indeed about political orientations and how they are viewed over time. My bad.
Still, I think this particular avenue of debate is not going to yield much progress for anybody.