::dalek voice:: Yes.
This is odd, as there will be at least 4 episodes on an alien world/setting this season. Something the first series of the reboot couldn't do. Conversely there are also three historicals, something each season has had one, maybe two of in decades!?
As a general note on Sci-Fi as metaphor or object lessons... While metaphors are good, they do have the possibility of being reductive. You shouldn't have to see Frank Gorshin in half-blackface against another actor with the paint on the other side to understand that racism is wrong. It works, it makes sense, but I'll tell you I've heard some odd reads of that over the years. As well, I know many sci-fi fans of color, the lgbtq+ community, etc. who balk at sci-fi shows still using metaphor over representation. Rather than have a frank conversation about racism (Rosa) or religious intolerance (Demons..., presumably an aspect of the upcoming Witchhunters) in historical context or with actors from those groups, sci-fi gravitates towards simple, sometimes non-controversial, stories about the subject. The Thals and Kaleds are a metaphor for intolerance... until you realize they all look like the same 10 British people. The X-Men are a great metaphor for civil rights, lgbtq+ rights, etc. up until the point that there are practical problems with how we react to someone who could create a nuclear explosion on their own volition and it ceases to work.