None of that support staff is constitutionally allowed to make the call to respond to an imminent or ongoing attack. We need a commander in chief and we need to know who that person is -- which was the whole point of the Presidential Succession Act and the 25th amendment. This isn't even a Biden thing -- we had similar issues with Wilson, FDR, Kennedy and Reagan, and I'm sure that some administrations had similar issues that were never reported or written about afterwards.

Airplane can fly and land themselves for the most part it’s only in case of a emergency does a pilot really need to have quick judgment

Economic attacks are a thing.

Isn’t that true of airplanes as well? In theory support staff in the flight control room could instruct e.g. a flight attendant or even a passenger to land an airplane. However it is still not a good idea, chances are it will fail, so you do as much as feasible to prevent both pilots from becoming incapacitated in a large commercial plane.

> Unless the nation is physically under attack, the president's day-to-day job is probably physically less demanding than that of pilots.

Having worked in the White House, this is 110% wrong. The Presidency is an extraordinarily demanding job. The cognitive demands and the and physical toll it takes on you is tremendous.

>They have plenty of time for golf.

Only the bad ones. The good ones have less downtime than a regular person. Random dudes you work with probably golf more than most presidents do.