I'm going to use that as an excuse for being unproductive: "don't worry about me slacking off - I'm working on the wrong thing anyway, so really I'm avoiding creating more technical debt, so you should reward me for that..."
This reminds me of velocity. In physics, velocity is a vector that represents both speed and direction. In SCRUM the focus seems to be mainly on speed and not so much direction.
If you're focused upon speed, but not pointed in the right direction, you end up getting lost faster.