I’m sorry, but I just don’t see it. I rode a track tandem in sprint National races, and no one ever needed chain tugs. We never pulled a wheel over, nor did I ever see a team do so. We did use decent kit of course, Campag or Airlight hubs that gripped well.
I suspect a few people use a too tight chain. I was shown to have a chain that was just tight enough not to come off when you spun the pedals with the bike held horizontally, and shaken a bit.