Change for spite's sake!

I am amused at the Obama Administration working so hard to avoid using any terminology that may link them to the Bush Administration. They refuse to say "War On Terror" or "Enemy Combatant". The One, himself, refuses to acknowledge that the surge worked in Iraq. It goes on and on.

It is okay to say "War On Poverty" or "War On Drugs"; since "War On ..." has come to mean a serious concerted National opposition to something. But, the term "War On Terror" first arose with the Bush Administration, so it cannot now be repeated.

Can anyone explain to me why this is important in the governance of the world's only superpower?