I agree with your basic analysis of how the "ugh field" works, but I wouldn't be so quick to categorically label it as a problem - cultivating an "ugh field" could also be an effective anti-akrasia technique if honed properly. What if you manage to train your usual (wasteful) displacement activities to trigger the "ugh field", so that your new "displacement" activities become what you originally intended to do to begin with?

I'd like to think that I've encountered some success by basically doing this myself - I probably avoid seductive time-wasters just by having a visceral reaction of disgust for even considering them. It's not perfect, but it's a habit I think can be cultivated in the right direction.