The lights are on
Halo ODST took place during the Halo timeline. The covenant were attacking Earth and defending Halo. Reach took place right before the first Halo was discovered to explain the history behind the main protagonist who destroys Halo's. I think names do matter in telling an overall arch of a story or giving us a little expectation. Halo 4 does cover that fact, but why not subtitle it? Bioshock: Infinite is subtitled because it's a different time, place, and story arch.
Like I said in my last post. I'll redact my problem with the game if there is some huge plot twist that brings back the halos.