Actually if the author butchers the phrase then such acknowledgements don’t matter. Actually it makes it worse…

I’ve got this sword of Damocles[1] hanging over my head right now; I don’t know whether I should have turkey dinner tonight or homemade pizza. Such swords of worry come up in my head quite often, and I think one should learn to master them. In fact, as the CEO of Douchebags Inc. writes in his book Facing Your Own Damocles—

[1] Recites Wikipedia

A footnote is nice, but you can't really take a well known phrase and just redefine it according to your needs, while clickbaiting a bunch of people.