Beyond that he's not too unique as a president - at least in the abstract: No one else has dared to be so bold in their disregard for the constitution, and yet so inept in executing it.
Uh, no, The Apprentice traded on that reputation, which had already been established decades earlier.
Maybe most people who were quite young when it aired; Trump was a constant media presence from something like the late 1970s well into the 1990s, and sort of a pop culture touchstone for conspicuous excess as well as having a reputation as a successful NYC developer and prolific womanizer.
For your specific example, polishing graphs and communicating visually sounds totally valid in the context of any other executive.
“Since Reagan, the conservative movement saw a resurgence.”
That sentence would make no sense if “since” meant “immediately after”.
In that sense if the word, the sentence:
"Trump's environmental regulatory bonfire is something Republican presidents have sought to do since Nixon"
would indicate Republican presidents in the time period subsequent to Nixon. Which I think makes sense, ymmv.
Not sure where they would find a Republican politico with this quality in such a short time.
Might be something that happens after a 12 year D presidency if Biden ends up stepping down Jan 21st leaving the presidency to Harris and her running for 2 terms as a minority woman that didn't have to deal with questions of inefficacy from a traditional election cycle.
[Edit: Presuming you meant January 21st of this year. It would still be true if he stepped down next year, though.]
There will always be someone similar to his thinking, but more competent in execution and networking. The world was incredibly lucky that Trump had a short attention span and was pretty much seen as disgusting by most of the political establishment of both parties - they saw him as an useful tool for their own purposes (tax cuts, immigration/environment/anti-LGBT/anti-abortion policy), but didn't let Trump accomplish much else.
To make it worse: the Republican Party is so overrun with rabid Trumpists and so dependent on his voter base (because moderates have fled to the Democrats) that they cannot even sanction someone like MT Greene, who openly spouts QAnon conspiracies. What once began with the Tea Party and had its culmination with the Trump Presidency will not be vanished easily... to gain back the moderate side of voters, the Republicans would have to commit to a cleaning so deep that it may reduce them to opposition for many years - in a time where lots of the population are going to shift left as an after-effect of the coronavirus shocks and the "old" Republican voter class gets demographically eliminated.
They are caught between a rock (demographics) and a hard place (essentially, call them what they are, Nazis and fascists), and are running out of time. It is very well possible that they double down on the right-wing train in 2022 / 2024 for one last shot at success.