Anyone who tries to explain Chief’s armor redesign as anything other than just an art style change is lying to themselves. For that same reason, since Infinite is also just changing art styles, they literally don’t have to explain anything; canonically, it could still be the same exact armor from 5.
Yes, following the launch of Halo 4, certain canonical references have been made to further justify the “nanobot” explanation behind Chief’s armor completely changing. But even then, every single one of those explanations are themselves retcons. The only reference we had to these nanobots prior to H4’s launch was in the Kilo-Five trilogy… which also specifically mentions that said nanobots were only ever added to Mark VII Mjolnir, developed well after Chief was stuck in cryo. So, even in their attempt to pre-emptively justify the nanobots, the armor change STILL breaks canon, according to every reference prior to Halo 4. It’s embarrassing.
And, as for the equally canon-breaking armor usage in Halo 4’s opening cutscene; the “we didn’t have resources for proper armor assets” excuse is also a joke. If that was the case, then how can they justify the fact that they had the resources for a Brute in that same cutscene, which also wasn’t even in the game? Not to mention the fact that even having those Spartans fighting Brutes in the first place ALSO breaks canon!?
Retcon, retcon, canon contradiction, retcon, etc… Halo 4’s opening cutscene alone craps so hard on all preexisting canon, that it’s utterly mystifying to me that so many apparently “hardcore” fans of the EU don’t seem to even care. I mean, Reach retconned the timeline by a few weeks and people lost their minds, even when the events themselves were essentially the same, but what do I know.
To be clear, there is absolutely nothing wrong with preferring the 343 art style, that’s perfectly understandable. I’m specifically flustered by the amount of people who will argue so vehemently about the new armor being canon, despite the fact that everything surrounding its introduction broke canon, at the time.
Even now, the only “sources” we have to support the nanobots are, what? An artbook, and because Frank “said so?” Either way, it still breaks previous canon, and exists as a total retcon; that’s fact. Simply accepting that it was just an art style change makes things way simpler, and removes an immense amount of division among the fanbase. It also makes Chief’s “classic” armor in Infinite a non-canon issue, because it’s just a new art style. That’s all the explanation 343 needs to give, if they’re smart about it.