Erasing Dark Energy

  [...] an expanding wave with its epicenter near the Earth could 
  produce the dimming effects the two teams had observed [...]

There is a good reason why we say "all other things being equal or held constant" until evidence suggests otherwise.

As a model, this shockwave hypothesis draws its only reason for existing from the apparent willingness or need to put humans at the center of the universe, with all the consequences it implies. It's baffling that given all we know today, there are still a lot of supporters for hypotheses putting the Earth at the center of everything, but for some reason I can't find a single one that is based on, say, galaxy cluster Abell 2744 being the most important point in space.