Ant-Man and the Wasp: Quantumania director Peyton Reed explains why Cassie Lang was recast for the movie. While Ant-Man and the Wasp: Quantumania has become one of the Marvel Cinematic Universe's most controversial entries due to the film's middling reviews and disappointing box office numbers, the movie did get one important Ant-Man aspect right. Ant-Man and the Wasp: Quantumania hinged on the relationship between Paul Rudd's Scott Lang and his daughter Cassie, and new actress Kathryn Newton seamlessly took over the young hero's role. Now, Reed explains why he chose Newton for Cassie.
https://screenrant.com/ant-man-director-cassie-lang-quantumania-recast-reason/