That enlarged image has convinced me that it is in fact blood on the window and down the side of the door, and not the dark seatbelt contrasted against the white seat.
Did you notice where the blood streak starts, SG? It starts several inches down from the doorframe, almost as if the window is rolled down several inches. Video from these police cruiser dashcam shows Crutcher's arm reaching forward at what would be about the same height the blood streak starts. Crump is setting himself up for failure regarding this matter.
Something else I noticed about the article you linked to, and in other media, is the apparent reluctance to mention that the first woman to call 911 about the abandoned vehicle said she thought he was smoking something, twice. Shelby has said that, the officer in the helicopter had said that, and a passerby who is not affiliated with the police.
Speaking of misinformation:
The witness who called 911 also said, twice, that the vehicle was running. There is no way the family could possibly know that the SUV broke down.