Trump has explicitly and clearly stated he plans to fill the supreme court with cronies, and then dissolve massive parts of the bureaucracy to instead divert that power to the president. Keep in mind, on top of this, he is also now completely immune from all crimes.

This new-found concentration of power in the president has never before been seen in American politics. It is genuinely worrying, even if you believe Trump will use his new powers in benevolent ways.