When it comes to being used by God, is wrong head really better than a wrong heart?

[Minyi]

I came across this post https://open.substack.com/pub/fotiz...t?r=5lv3cm&utm_campaign=post&utm_medium=email
and it made sense to me. Is it really true that God can tolerate a wrong head but not a wrong heart?

Also, is that what happened in God’s relationship with David vis-a-vis His punishment of Saul?