Professionals who do not reflect their profession, even when they cannot attend to themselves (like, say, barbers or dentists) just means the person is not taking their profession seriously, does not believe in it and its teachings, and generally does not care. It's just a job for them. Passion, continual improvement, innovation, mastery of the craft, they have none of that. They might be cheap and available, and get the basics done, but you'll outgrow them quickly.