While that's true, he may be frail and average run-jump athletically
Sure, but Haliburtons got one physical attribute in his favor that helps even it out a lot in his 7 foot wingspan.
You need to take into account all manner of physical attributes. Marvin Bagley may seem like the perfect NBA physical specimen for his run and jump athleticism, but his wingspan is notably only one inch longer than our new 6'5" guard and has and will hinder him.
I don't see how he fails, his average athleticism and weight is the only thing against him, he checks all the boxes of IQ, shooting, playmaking, and defending. High floor at least.