Marvel is no stranger to misleading trailers, and it would be wildly out of character for them to spoil a major plot point like a character’s death so blatantly. If anything, the absence of Taskmaster in the marketing might hint at a bigger role in Thunderbolts* than people expect.

One of the least likely Avengers has apparently become a congressman in Marvel's Thunderbolts* movie, marking an unusual turn of events for the MCU character.