However, more important is the deleterious impact of The Critic in this setting. Why? Because more often than not, the individual in question has chosen this path over that of active doer. When work is required, they are too busy or conveniently unreachable. Once it’s completed, they are front and centre – full blown deus ex machina syndrome intact – swooping down to save the board from itself with a slew of ultimately inconsequential post-project corrections or complaints. An already overburdened board or leader will obviously resent this approach, particularly if you were the board member charged with the responsibility.
Again, there is legitimate benefit in value judgments and an honest critique towards polished results, but it is disingenuous at best to adopt this modus operandi without timely contributions before the work is completed. I’ve seen fist fights and shoving matches in board rooms because of it, and it can breed resentment or a demoralised environment.
There is a poignant saying: “Those who say it cannot be done should not interrupt those who are doing it.” Enough said.
-from "How to Avoid the Pitfalls of Nonprofit Hell"