It was during these times when a significant chunk of American establishment and some members of British royal family were not less fascist leaning than him. I understand that they're also all not vogue now, but it still has to be reminded.
He moved to Switzerland before German fasicsm turned out real bad.
That explains why he wasn't shunned by western society back then, it doesn't explain why putin rehabilitated him recently, and it certainly wouldn't explain promoting his books on hackernews (which was why I was initially confused about this whole thread on hn).
