Speilberg was asked about the Gibson film when it came out and declined to comment. Where do you get this information? Films about homosexuality and perversion represent a rather small percentage of Hollywood product.
There were several stories about it. Spielberg wasn't talking to the press when he said this. It was some party talk that got out. Both he and Katzenberg backtracked very quickly. They were both swearing that they'd never work with him and that they'd use their pull to keep their studios away from him.