It unable Vs unwilling. Trump has shown he's perfectly capable of motivating himself to do stuff. He just doesn't bother.
Laziness is sitting on the sofa watching TV, ignoring other required tasks.
ADHD is sitting the on the sofa watching TV, internally stressing over the tasks that need doing, but you just don't get up.
Externally they look almost identical, but the internal cause is quite different. Trump is lazy
FYI, the difference is what fucks up people with ADHD who are told they are lazy. The motivation methods for laziness don't work well on ADHD. Pre diagnosis, I thought I was lazy, because I couldn't reach my potential. The internal stress I put myself under actually caused me heart issues. They went away when I went into complete burnout post university. It took over 6 months for me to become even particularly functional, and I never fully recovered mentally.
Sorry for the rant, the comparison hit a nerve. ☹️