Trump was not daring to go as far as now but most importantly he only learned what the safeguards of rule of law and state institutions are. So even if he tried, there were too many people in too many positions pushing back hard enough for him to hit a wall. So for his second term he used the Republican party to purge all those upright and reasonable people from all those administrative positions. As far as he could anyway. After regaining power, that purge of course vastly accelerated using presidential powers. Also the Supreme Court has a solid Republican majority now, with judges that will go very far in rubber stamping previously considered unconstitutional stuff (maybe not everything but almost as much).
This will also not go away when Trump is finally going to hell. The destroyed structures are destroyed and the tech oligarchy teamed up with the thecoratic extremists behind him will take over control directly, via Vance or some other guy. It is a lot of the Russian playbook, translated for US cinema.
I like how the living violation of the establishment clause will get its own golden cow or arc. Seems fitting.