Your belief is shared by a lot of my republican-voting family members. I'm skeptical this belief is warranted. I never in my wildest dreams thought it possible the unprecedented and permanent changes Trump has made to the character of the institutions of American government over the last 11 months.
Until now presidents respected and upheld the idea that executive institutions were loyal to the constitution and the country and the president's job was to enact policies that would guide them, and make sure Congress' laws were followed. Civil servants would do their best to make these policies a reality, with the constitution being the guiding light. The president never had power to fire mere bureaucrats just because he didn't like them personally---in fact the idea that a president would have a personal interest in any civil servants was absurd. This led to stable institutions that allowed for peaceful transfer of power and made the US very powerful, even if it sometimes seemed schizophrenic to the outside world. This was admired and envied around the world.
Now it's different. These institutions are completely partisan now. They no longer serve the country, but serve the president personally. Can you imagine they will allow a peaceful transition of power and serve the new president as they have the current one? A Democrat would have to completely fire absolutely everyone every time he got in office. We've already seen the chaos this has caused. Imagine every president doing this when he first gets in? What a disaster! And add to that the inevitable temptation to ever increase presidential power. They will do so to "get things done and back to normal."
These are watershed events that we're witnessing play out, and unfortunately just as permanent as brexit.