Lol. But total depravity(humans are inherently evil and enslaved to sin without the irresistible grace of God) is one of the five tenents of the Calvinist reformation, along with unconditional election (predestination of those chosen to receive salvation, the elect), limited atonement (Christ died only for the sins of the elect), irresistible grace (God's grace overcomes the resistance to the gospel of the elect), and perseverance of the saints (true believers will never lose their faith and continue to follow God's teachings, as they are the elect).

To a lot of people raised in protestant churches, this is Christianity and everything else is hearsay. Even if they do not know about these five tenents, they've passively absorbed them through Sunday school and attending church services where the pastor bases their sermons on these tenents. Which means that they believe in predestination without even knowing it! Which is also why they are so surprised to hear the Pope reject them, it goes against everything they've ever heard in church. Despite the majority of Christians on earth not being reformists/Calvinists.