Nope. By that definition any theory or concept is a spoiler. No way. A spoiler has to include factual information not available to people who who haven't watched the show.
The black Starfleet badges- Section 31?
Entirely possible that we are seeing it's birth: What is also obvious is that the spore drive will soon be weaponized, leading to the well-known Klingon virus. Section 31 could cover that war crime, thus returning us to the traditional timeline (and Klingon make-up). Something as powerful as the spore drive can't be undone in the continuity without something going horribly wrong.
God damn the way the Klingons talk on this show is annoying.
It feels like they all take twice as long to say anything as they did on any previous show. T'Kuvma was particularly bad, I'm glad he's dead.