I also think it is a massive improvement, some of the ”issues” mentioned above will surely be iterated on if relevant over time, in future point releases - this was clearly a major release 
With regard to the verbiage, I think the key point for a visitor is whether they feel they are a targeted use case for the language.
I was super happy to see the emphasis on server-side, embedded, etc, this is the correct approach to widen the pitch for the language to newcomers - especially important for those who might view Apple tech as insular. Really the right call - no one will doubt Swift will be great for building Apple-specific apps, even if that is not front and center on the language web site. (Then at Apple.com I would expect a different emphasis). Kudos.
The corollary to this is then that the important thing is ”wow, swift really targets my server-side/embedded/xxx platform”, not that it is ”the only one” that can do it - I don’t really care. I care if it targets what I need it for.
For our customers, having server-side development on Linux there is super important (the macOS support is taken for granted!).