Orny Adams, who plays Coach Finstock, defends Teen Wolf: The Movie's decision to kill off Derek Hale. The revival film saw the return of many actors from the original series, including Adams and Tyler Hoechlin as Derek, but it was arguably more notable for the mixed response that it garnered with the fanbase. The choice to kill off Derek late in the third act sparked a lot of discussion about the purpose of the project and whether important characters were being discarded in order to set up a potential spinoff.

https://screenrant.com/teen-wolf-movie-derek-death-defense-orny-adams/