I am a bit mystified why you think I don't understand the meaning of "deprecated." In my original post I wrote "The current code works" and about update I wrote "probably", "at some point", "No hurry", and "Just thought I would mention". I would think that suggests a pretty low priority, subterranean even.
Deprecated pretty much means there is a newer, preferred method but the older method cannot be removed because it would simply break too many things and it is an encouragement to migrate older code. In looking at the above case, I saw emails as much as 4 years old referencing it. Because there is so much inertia in the old method, the old method will be supported for a long time. Because it will be supported for a long time, few feel compelled to update the old code thus completing the self-perpetuating cycle.
And thus deprecated has apparently been the victim of semantic drift where it now seems to mean "There is a newer, preferred method but no one expects the old code to be migrated so we just wanted to annoy you with a deprecated warning." :-)
My spindown script puts out an informational message when a device is spun down. It is always accompanied by the deprecated warning which is much longer and thus stands out more in the log. So I guess "Cloud, meet silver lining."