As essential as it is to get away from relying on Russia to send our astronauts into space, strapping them to a rocket that's never had a full integration test before is, frankly, extremely reckless. Especially if the EM-1 mission is going to be leaving LEO for the first time in 40 years. NASA got plenty of flack for live-crew-testing the Shuttle's first launch, but that was largely done out of necessity, because they couldn't fly-by-wire the thing's landing. By comparison, SLS/Orion is a much more traditional platform that can easily be sent up and retrieved without having a crew on-board to fly it. It hurts nothing besides Trump's impossibly thin ego to run EM-1 without a crew on-board.
I really desperately hope that if this happens, everything goes as smoothly as possible. But I worry. And if something does go wrong, Trump is going to have to answer for it. Manned spaceflight is not something you cut corners on to meet arbitrary deadlines. We just observed the 50th anniversary of the Apollo 1 fire that killed three of NASA's finest less than a month ago. It's gut-wrenching that nobody seems to have learned anything from that disaster.