The move to make swift run on Linux could be part of that work - their sysadmins, devops, and backend folks probably use Vim/VSCode and deploy on Linux.
We might see the release of a very good backend framework by apple for Swift that works on Mac/Linux.
The new macros they added kinda bolt on serde into the language too - and the distributed actor stuff is basically RPC in the language.
They’re also using embedded Swift in the Secure Enclaves and other small processors due to its safety, though I think they have an extra layer of automated security checking that they use internally that doesn’t exist in the public builds.
But in short, yes. I believe they’re trying to use Swift for everything at this point and getting away from C/C++/whatever even for kernel work.
I think the main problem, and this is a really big problem, is that based on a very shallow investigation I did a couple months back, the ecosystem for server-side stuff barely exists.
And in my opinion, the ecosystem is one of the deciding factors when picking a language.