Through-out mt career, I have lived through six CEO's. Two were GREAT and acted exactly like Mr. Trump. One was crazy and ended up getting canned. Two had Trump drive and business mind but were not obnoxious like Trump can be at times. One was a short stint by the owner of the company.
The two that were similar to Trumps style, each helped the company to double in size during their tenure. They expected a lot from the senior team and would cann ya' in a NY minute if you "over promised and under delivered." Once I made a ~$10K mistake and tendered my resignation. The CEO literately crumbled it up and threw it back at me. He said, "What the F$%&K! I just invested $10K in you and you think I don't want my investment back? Now get the hell out of my office and get to work!"
In each case, the new CEO would fire 50% of the senior team within the first six months on the job. Then there would be another purge at the beginning of their second year. So it doesn't surprise me that people are being asked to leave and new folks coming in.
For most people who have not worked at a senior level at a good size corporation, Trump's style is hard to understand and in many cases accept.