There you have it Master Chief as it is in the games, there is no reason to complain anymore
This is exactly Sandman, in fact many very dreamlike or experimental parts have been adapted in another way or directly omitted or maybe in future episodes we will see them. But the comic is the same, they are short stories or fables, some longer with vague connections, hence the roller coaster of quality, but in the end they are all related and are part of the final outcome
The series is "based on" the HALO franchise, it will never, never, never adapt anything from the games literally. I understand the fans' annoyance but on its own terms it's an entertaining show "based on" HALO universe, except for the Kwan subplot which is rubbish.