Oh, OK, that's not as bad as I thought. I thought he was had more or less called them trash that only idiots liked. Which would have been kind of hypocritical since stuff like Jurrasic Park or Ready Player One aren't really that far off from superhero movies.
Spielberg has executive-produced a superhero TV series, Freakazoid!, though it was a spoof of the genre. He executive-produced The Mask of Zorro and The Legend of Zorro, based on the first costumed/masked hero in American fiction; several of the Transformers movies, which are arguably superhero-adjacent; and Men in Black, based on an obscure comic book. And he produced and directed The Adventures of Tintin, based on one of the world's most popular comic book heroes, albeit not a superhero.