I agree, and also, he didn't want to run because of the public assassination he feared from the liberal press. Trump doesn't care what the MSM thinks of him, but Daniels feared it.
It's Five Personality Traits.
There is a range from Disagreeable, to Agreeable.
And where you fit on the scale, dictates your behavior.
Neville Chamberlain: Highly Agreeable. Total Desire for people to like him. Hence, "peace in our time" BS.
Winnie C: Tending towards disagreeable. Less desire for likeablility: "we shall fight on the sea, air, etc."
Fascinating study. Started back in the 80's. There's online info and self tests and stuff now.