This is a linkpost for http://squirrelinhell.blogspot.com/2016/03/abuse-of-productivity-systems.html
Is “time management” even a meaningful term?
Yes, insofar what makes a term meaningful is its uselfulness for communication :-) But your point is valid, "time management" is basically the management of your own attention and effort.
I have moved this post to my blog: http://squirrelinhell.blogspot.com/2016/03/abuse-of-productivity-systems.html