They sure helped.

Sure, but QE was gone while Obama was still president, and interest rates under Trump are not much above zero.

The point is that Trump didn't "turn the economy around", or "save the economy from Obama", and the "economy did not explode under Trump". Obama put up decent improvement numbers with some monetary policy help, and the economy was fine when Trump got it. We only point out those numbers so that you Trump lovers tap the brakes on touting Trump's economic achievements