Mind you, I couldn't care less about Agents of Shield, and stopped watching after all of three episodes in season 1.

BUT. Despite the movie being out for a couple of weeks now, I highly doubt they'd go so many lengths to preserve the many twists in the movie, only to have a struggling TV show completely spoil everything in the season finale.

At the same time, how can they NOT mention it?

And it's not a case where they can just get away with making vague references to it.

The same goes for all of the Netflix Marvel shows. Those shows almost all made references to "The Incident" from back in the first Avengers movie, treating it kind of like 9/11. If they are all connected to the MCU, how are they just going to skirt around the fact that half the population of the world is suddenly gone? You can't really make casual reference to something on that scale. Plus, realistically, at least some of the characters on that show would've been amongst the dead.

This is probably why no one involved wanted the shows to closely connect to the movies and vice versa. A whole season of Luke Cage trying to save the neighborhood from evil Alfre Woodard doesn't really make sense when half the population dies and every remaining superhero is trying to save the universe.