I doubt that Ryman, at least -- taking him as spokesman for mundane sf -- would admit generation star ship stories. For all its familiarity, which has made it seem just something "science" hasn't quite invented yet, the concept (whether with starships like Heinlein's "Universe" or with crew in suspended animation -- and the distances involved even to the nearest star -- would be beyond the "mundane." Ryman wants science fiction stories that work with the science we have or reasonable extrapolations thereof. No "magic."
I gather that "mundane" is also intended to imply "earthly, of the world" and center Earth and the problems of people living on and around Earth.
That would also tend to argue against generation ship stories, with the possible exception of KSR's Aurora which (spoilers?) is a critique of the generation ship concept from multiple perspectives.
Anyone else tired of Space Opera.
I do get tired of Space Opera from time to time but I think to a degree it comes down to Sturgeon's Law (90% of anything is crap), there's so much Space Opera out there...
Regarding the Mundane movement it doesn't appear to have had a major impact on the genre but the more I think about it the more I feel it has merit and it would be nice to be able to categorize books in this vein (perhaps with a more marketable name.)
I don't think the Expanse is mundane, there's alien tech and magic portals and other weirdness.
I wouldn't call Terra Ignota mundane either, though I haven't read past the first book. Spoiler:
Isn't there a character who can do literal magic?
Gibson's sprawl books would seem to fit but I recall reading something explicitly comparing Mundane SF with cyberpunk SF so I'm not sure the Mundanes would agree. Perhaps the tech extrapolation gets a bit too out there for them?
So yeah it's a bit slippery how much suspension of disbelief you need to agree to before it's too much to fit in Mundane. Still I get tired of universes full of aliens who want to hang out and trade and be friends with humans all the time and who are zipping around the galaxy having swashbuckling adventures. Give me SF that goodreads reviewers complain about needing a physics degree to understand. (Sometimes, other times I do like to hang with aliens and swashbuckle.)