Either the president doesn’t really do anything and is just a figurehead or it has to be someone with decades of government experience. It can't be both.

The lack of understanding is simply astounding, all for mental gymnastics.

The president has to do a ton to navigate the political mess, negotiate with others, and press the issues they want with both their party and with the other party. That takes skill, knowledge, and experience.

But they are NOT a king that gives orders. That's where you are twisting the presidents limited power to "doesn't really do anything". Ultimately the bill has to be written and passed by Congress, to be signed by the president. The President has to use their words (not their power, because that's not how it works) to convince others to do it. Again, because they are not a king.