They aknowlege that at the beggining of the post?

> They are now available to tinker with, by constructing one’s application using std.Io.Evented. They should be considered experimental because there is important followup work to be done before they can be used reliably and robustly:

And then they proceed to list 6 important pending work to be done.

It doesn't say "minor" details like networking not being implemented :)