Have the infamous exploits of Oxfam caused irreparable damage to all charities.
probably.

They have a problem - what you might call the Harvey Weinstein syndrome.

I heard a screenwriter (employed twice, sacked twice) recounting tales of the man. "He was a bully" - sums it up.

The point is a forceful person gets things done. And the force doesn't stop at work. Select for guys who have morals and you may find they wield less force. Get less done.

unintended consequences is a two edged sword here. In the wake of improving the morals of charity workers, there is another effect. While we welcome the trend, ignoring the co-effects is only going to surprise us.

Maxwell's Maxim "To measure is to know". Measuring should be holistic.