Potentially.
The biggest problem here is that Trump will only get judged for a few years.
When his policies hit the fan it'll be too late for people to vote against him.
He's lucky. He's inherited a great economy.
Democracy is the preserve of shortsighted people.
It's common knowledge, (don't ya know) that GW's successes were due to Clinton. Obama's failures were due to GW. Trump's successes are absolutely due to Obama. The next President in 2024... their failures will of course be due to Trump... I mean really, get with the program here... lol
The issue is that presidents often have more impact after their time.
The best way of saying it would be that a competent president will keep the boat steady, and a bad president will make things worse. A president can't really make things better.
George W. Bush had his wars. Clinton helped make the recession, but then again Bush had 8 years, and CONGRESS had 8 years to sort it out.
Congress is an important part of US politics, which is why a president often can't be that important for success, success often has to come from Congress too.