The trailer is purposely cryptic but it does show snippets of random areas while hinting at the main conceit of what it's supposed to be about. The video description also indicates some of the premise and how it will be implemented in-game. I think it's fine but if you have to ask I would probably err on just not watching it.
I definitely did not forget to put the 2020 GOTD Guru winner,
azuarc
in my sig!