Tips for spotting the foolish leader

We have all seen the leaders who act like fools. But it can be hard to be specific.  I found this post while sitting watching a presentation that was particularly foolish.  The post is good here is a snippet.

How do we know if a potential leader is foolish? The principle is in this statement that Jesus made: “Every healthy tree bears good fruit, but the diseased tree bears bad fruit” (Matthew 7:17). We must examine the fruit. And the Bible is quite clear on what the diseased fruit of foolishness looks like:

The foolish look with haughty eyes (Proverbs 6:17).
The foolish engage in slander (Proverbs 10:18).
The foolish joke about their wrongdoing (Proverbs 10:23).
The foolish make great boasts (Psalm 12:3).
The foolish are stubbornly right in their own eyes (Proverbs 12:15).
The foolish are quickly annoyed by insults (Proverbs 12:16).