Why is Paul Walker's New Movie Tagging Him on Twitter Like He's Alive?

This is a tweet—from four days ago, but still being actively promoted on Twitter—for the new film Brick Mansions, which was completed before Paul Walker's death. Here's the thing about @RealPaulWalker: he isn't alive, so let's stop @-ing him on Twitter like he is.

This is bizarre and creepy, as is the quasi-poster, which fades Walker out like he's a ghost. Also bizarre and creepy: that Paul Walker's Twitter account is still active. Dead people should not have active social media presences.