Ah. I try to avoid everything that's in this video and I wish they hadn't published it. I know too much already without watching it. This may be one of those threads to include 'spoilers' in the title.
Yeah, there is a tendency to overdo the reveals in the marketing run-up to the release of recent games; and with the explosion of secondary content over the last 10 years, it tends to be difficult to avoid seeing things you subsequently wish you hadn't.