Calling it a lack of motivation is generous. Most of the time it's avoidance, wearing the costume of a bad day.

The thought behind it

The work here is precision: calling the thing what it is instead of what it has been politely mistaken for. Under The Honest Mirror the discomfort is the mechanism — you cannot correct a position you refuse to look at. Everything hinges on “avoidance”, which is the part a politer version of this sentence would have left out.