David Ellison , who works at Paramount , expressed his concerns about Annihilation being too intellectual and complicated .
Due to a poorly received test screening , David Ellison , a financier and producer at Paramount , became concerned that the film was `` too intellectual '' and `` too complicated '' , and demanded changes to make it appeal to a wider audience , including making Portman 's character more sympathetic , and changing the ending .
Annihilation -LRB-film-RRB-