> it's more of a demonstration of the problem with governments that are designed to have a very strong executive
The system WASN'T design to have a very strong executive, quite literally the opposite. The other branches have simply bowed down and let him bulldoze them. And yes, this has been building up for decades, but these cases are and above any overreach of previous presidents.
The Federalist Papers show the thinking behind how and why the three branches are mostly co-equal but the executive is designed to be ever so slightly more potent.
A presidential system is a design that has a strong executive. I agree that the presidency has grown stronger then intended, but it was always strong relative to other kinds of systems.