Only time will tell if Donald Trump will destroy the presidency or not. He had made some decisions that were never considered by the past presidents of the United States. Some of them turned out to be okay while others are still being considered bad by people from different parts of the globe. Trump is considered to be a different president from the usual.
Majority of Americans probably saw something in Trump that they did not find in their past presidents. Is the “difference” the intent to destroy presidency? This cannot be answered yet but people are wary about what the future will hold. There are still years to go before Trump steps down if he would.