> Presumably, the same, or almost the same, outcome (of his dental practice being closed, not the other harrassment) would occur if he were, say, imprisoned for his actions after a lawful trial, but no-one would claim that it was the court's responsibility to "find new jobs for the innocent dental employees it is [putting] out of work."

This goes back to the difference between an internet mob and a court. The internet mob acts on moral outrage. It is inconsistent for them to be outraged about the death of a lion and not outraged about innocents losing income.

The court acts on legal principles. Legally, if the dentist is to be punished, that's where it ends.