That's fine, the format in which they bring you lore in a universe can change so long as it is still there. If their past games are anything to go by it will be waaaaay more interesting than grimoire. Halo 3 and Reach are very good examples of how to put extended context into the game. It was basically how metroid prime did it, it's there and you can get into it at your own pace. Only you sorta have to pay more attention and in Halo 3 and Reach's case find it. It's awesome as hell though. Can't say I am worried in the slightest given that is the direction they go. Some youtuber that has ignored the criticism up to now getting worried about their "job" they clearly aren't taking seriously is not something I care about.