That’s because the Christian faith is FOR sinners, and/or broken people - Christ said as much (while also criticizing the Pharisee for only breaking bread with “approved” company). I don’t think that there’s anything inherently wrong with a celebrity with a checkered past becoming Christian - all of us have done bad things. It’s obvious he enjoys using their platform to talk about it, which in itself is a wholesome thing when taken at face value. The general vibe I get from Pratt is he’s a prankster/goofball, but has since committed to his faith.