(s) is just ugly with a vibe of DOS. In most cases just using the normal plural
form is more natural and gramatically correct.
There are some log_debug() statements left, and texts in foreign licenses or
headers. Those are not touched on purpose.
When a service unit Requires= a socket, and the socket is restarted while the
service is in state=activating, the propagated restart is being discarded. This
is contrary to the documentation for Requires=, which states "this unit will be
stopped (or restarted) if one of the other units is explicitly stopped (or
restarted)".