the player character expressed flagrant disregard for any narrative elements

They don’t. Doomguy does like two things in the very beginning, but it’s not like they don’t care, but what Hayden has to say and his justifications for everything that has happened.

You meet Hayden later in his office, with a few minutes unskippable “cutscene,” but it’s not like Doomguy ignores him or jumps out of a window in the middle of it.