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.
Social media is moving to make sure there is never a Trump 2.0. They can't silence him, that would be too obvious. So he can still use the medium. But everyone else is being subjected to a plethora of rules where big tech can now say "show me the user and I'll show you the reason he can be banned". And then they all strike at once in obvious coordination. One moment, a person has millions of followers who are hungry for his message, the next he's been erased from the internet. And it only goes in one direction, only rightwards. They are closing that path for the next generation of leaders on the right.