Although Sigourney Weaver is one of the original cast members of Ghostbusters, her return in Ghostbusters: Afterlife ended up affecting her place in the reboot movies. Back in 1984, Ivan Reitman introduced the world to a group of eccentric parapsychologists who started a ghost-catching business in New York City and made themselves known as the “Ghostbusters”. The movie was a huge critical and commercial success, becoming a cultural phenomenon, and, unsurprisingly, making way for a very profitable multimedia franchise with video games, comic books, TV shows, and two sequels.

https://screenrant.com/ghostbusters-afterlife-sigourney-weaver-cameo-wasted/