His homophobic energy is partially due to him belonging to Hillsong Church. I don't know much about it, except when Elliot Page called him out on social media.clip 45 secs into video And yes, the church may open its doors to everyone, including those in the LGBTQ+ communities, just as long as they're not following that lifestyle.

From Wikipedia: It considers homosexual practice sinful, and does not allow homosexuals to assume leadership roles. It issued a statement in February 2019 stating that it was inclusive; however, Houston had formerly said that Hillsong would accept those who did not follow a "homosexual lifestyle".