No need to go back in time. People say that about CGI in movies today. Studios lie about CGI, and even alter BTS footage. Directors are under NDA. Actors are clueless. Everyone says everything is real to appeal to the CGI bad crowd. Media outlets hype the new practically shot movie. After a few weeks or months after the release, the VFX studios behind the movie show off their work. Turns out it was CGI all along, but nobody cares at that point.