All sound and no rhythm as an idiom means having intellectual wisdom but no financial prudence. I got this from Pranoy Roy the media king of India who owns NDTV, a prominent news channel. Pranoy Roy has fallen into severe debt and his premises have been raided.
We cannot call Trump as an all sound and no rhythm person.
The fate of Pranoy Roy as a media tycoon has become an all sound and no rhythm one.