Yeah that line gave me a twitch. Reading on though it's more about the resulting coherence and correctness rather than like the Ralph Waldo Emerson quote: "A foolish consistency is the hobgoblin of little minds, adored by little statesmen and philosophers and divines."

I agree. It's only the foolish consistency that's problematic. A sensible consistency does, as you say, provide a coherence. William James, who overlapped Emerson, has a lot to say about positive habits.