Does joy and love for the spread of sins and disbelief, and a person's desire for them to occur and proliferate, constitute disbelief (kufr), and when is it so and when is it not?

If a Muslim is content with God's rulings and submits to them, and his weak faith leads him to commit sins and invite others to them, he does not become an infidel. He will bear the burden of those who followed him. However, if he desires God to be disobeyed on earth, or rejoices at the decline of the religion of Islam, or objects to God's rulings, or loves disbelief, then this person is an infidel. And whoever hates anything that the Messenger, peace and blessings be upon him, brought, has disbelieved. There is a difference between loving sin due to inclination of the self, and loving that God be disobeyed on earth and hating His law. Whoever dislikes religious obligations because of their difficulty does not become an infidel, in contrast to one who dislikes them because they are from God.