Sorry, Eric, I didn't see your use of it, but Motley certainly implied it. The definition in the manner I intended, from the Oxford Dictionary:

feckless |ˈfekləs|
adjective
(of a person) lacking in efficiency or vitality : a feckless mama's boy.
ORIGIN late 16th cent.: from Scots and northern English dialect feck (from effeck, variant of effect ) + -less .

Feckless in this sense applies to Carter as a President, though he was a decent guy as you mention. Feckless does not apply to Trump, though he is not such a decent guy. I would certainly choose Carter as a Sunday School teacher for my kids, and Trump as a President, given a choice of those two men and those two occupations.

Having bad luck is a different thing. The helicopter disaster running into a sandstorm was sort of bad luck. I have a relative who was asked to plan and fly that mission. He declined due to it being a bad idea for many reasons. No one listened, which was feckless. Afterward, they listened to him a lot more.