[joesbucks]

That’s the point. The courtesy wasn’t being extended, until there was backlash. And he then caved.

[Wizdum]

Any rule or custom pertaining to the display of the flag of the United States of America, set forth herein, may be altered, modified, or repealed, or additional rules with respect thereto may be prescribed, by the Commander in Chief of the Armed Forces of the United States, whenever he deems it to be appropriate or desirable; and any such alteration or additional rule shall be set forth in a proclamation.

Which is what his proclamation did today. Half staff until the day after interment. You can claim he 'caved', which, if you've been paying attention, the POTUS doesn't do, or he did the minimum necessary as C-in-C.