The defintion of GDP is:
GDP = private consumption + gross investment + government spending + (exports − imports).
Since GDP includes government spending and does not include the debt or any deficits, it will almost always remain robust and much higher than it actually seems. Since QE has an impact on all of the elements of GDP, QE will likely always remain a key factor on how GDP is calculated.
Borrowing money, printing money, running deficits, and existing debt does not count against GDP. No institution on earth get to fudge their books so egregiously.
Little wonder that we are doing so well. By that method, GDP should continue to expand ad infinitum.