Divorce exists, but not the degree of toleration for it. It is basically a non-issue in many churches.
As it should be. It is between two people and God. It’s only fuel for gossipers inside the church. Who needs a sermon on divorce? Both or at least one is more than likely devastated by it. A preacher should not waste the time of a whole congregation to preach/teach on divorce when no one wants divorce but some do ‘want out’ and they/or one goes privately to the pastor for counseling.