If you sincerely question, then it should be easy for you to provide samples of what is "beyond the pale". There is no need for narrative building either, it serves no purpose other than aggravating the other person and making them smaller.
I think the “narrative building” is important here, since I am responding to an in-construction narrative.
Frankly I really struggle to see how someone who has been reasonably paying attention would need examples; they’re too many to mention.
Off the top of my head and in no particular order:
1.) Unilaterally and without the consent of congress invoking emergency powers to place broad tariffs on almost the entire world has never been done
2.) Frequently attacking and undermining the judicial branch, including by transparently punishing entire law firms that represent causes unpopular with the administration has never been done
3.) Brazenly abusing the office of the presidency to further personal financial gain by launching a meme cryptocurrency days before taking office has never been done
These are just some of the many examples, and that’s without going into the many things before Jan 20, 2025 that are clearly and undoubtedly unprecedented.