Agreed. Just like Trump never did anything militarily. He was, however, very good with a Sharpie and took that chart with him to Mar-a-Lago with boxes of TS material.
https://www.cnn.com/2019/09/05/opinions/trump-sharpie-king-dantonio/index.html
Why Trump loves Sharpies
First made in 1964, when Trump was a senior at New York Military Academy, the Sharpie quickly became a favorite of celebrities and athletes who were asked to scrawl autographs on everything from baseballs to movie posters. Nothing communicated fame so immediately as a signature inked in a distinctive Sharpie scrawl. Johnny Carson, whom Trump idolized as a college student, was an early endorser.
I first noted the President’s penchant for the bold strokes made easy by this kind of magical marker when I examined documents that informed the Trump biography I published in 2015. Whether he was signing an ordinary letter or scrawling a snarky remark to send to a journalist, Trump invariably favored the impression made by this pen. When he wanted to add a special flourish he used one that came with gold ink. Nothing says Trump more than a message written in big golden letters.
Imitation being the sincerest form of flattery, those who served businessman Trump picked up the Sharpie habit. To do otherwise would mark (forgive the pun) an executive as a shrinking violet. At Trump Tower most of the signatures on interoffice envelopes were made with Sharpies. I noticed that his daughter Ivanka Trump wrote attaboy notes about her father’s press clippings in black Sharpie.