It’s not Superman himself, it’s the movie (although it’s not ‘anti-Jew’, it’s anti-Israeli); Barovia is a US ally and they’re being armed by the US and they’re invading a brown country (that actually looks and sounds more Indian than Middle Eastern but Israelis probably can’t tell different brown people apart). There’s a ton of bureaucracy yelling down Superman for getting involved and stopping the Barovian army early on in the movie.
Not major spoilers but:
spoiler
It’s not Superman himself, it’s the movie (although it’s not ‘anti-Jew’, it’s anti-Israeli); Barovia is a US ally and they’re being armed by the US and they’re invading a brown country (that actually looks and sounds more Indian than Middle Eastern but Israelis probably can’t tell different brown people apart). There’s a ton of bureaucracy yelling down Superman for getting involved and stopping the Barovian army early on in the movie.