Should ethicists be held to a higher moral standard?

The questions is pretty straightforward. I include also all religious people who claim to be knowledgeable of their religion, and in particular active priests of any religion.

Here's an article on the subject: http://blog.practicalethics.ox.ac.uk/2015/02/on-holding-ethicists-to-higher-moral-standards-and-the-value-of-moral-inconsistency/

But the reason is pretty obvious. People who preach ethics should lead by example, not hypocritically proclaiming "Do as I say, not as I do."

Of course, by ethics most people mean a variant of altruism. The fact that so many adherents of that moral code fail to live up to it is rather telling, also rather evaded by one and all.