[Loki's connections to Thanos is something Beck doesn't know.]

Yes, he's dead and the people he killed were restored. It was confusing as hell for everybody but in some way Stark was responsible.

[Even if other Avengers such as Hulk were responsible for the restoration, Tony still got the majority of the glory. Even dead he was the biggest hero. Maybe because of that. Either way, Beck was annoyed by it.]