The problem is, what will come after Trump?
Just like, what came after Reagan.
I believe this is a considerably different circumstance.
Reagan was able to speak directly to the people. He ended the Cold War.
Trump speaks to the people, but can reach them because of the structural change caused by the rise of alternate media.
Trump is showing other politicians how to beat the media.
Others may be able to follow his footsteps.
Also, President Trump is able to actually appoint originalists and textualists to the Supreme Court. He has already appointed two, in less than two years.
Reagan was only able to appoint one originalist and textualist to the Supreme Court, Antonin Scalia, in eight years.