Short climb for a longer drop?

I'm not perfect, not even close, and sometimes I wonder what degree ministry is stalled due to the sin of the leader.

How many things flop due to the hidden failings of the one in charge?

The question bounces around my mind because, for some, they are highly successful in ministry (or continue to be) DESPITE prominent sin in their lives.

And you don't have to look long nor hard to find examples. Often the situation blows up publicly.

They are busted cheating on their spouse.
Their computer is found riddled with porn.
They are caught embezzling funds.

Yes, God is outstandingly good and any ministry grows purely by His grace.

But, I wonder, is it an effective strategy of the Enemy for some ministries to grow and gain publicity, for the leader to inevitably fall and greater tarnish the work they had done and the people they leave behind.