Yeah, that’s nonsense about Tatum. From a quick look I believe he is shooting a better percentage from beyond the arc than everyone in the contest outside of Klay, good enough for 7th in the league. And you can’t say it’s a “rookie thing” either, because I’m fairly certain that Booker competed his rookie year, too.
EDIT: Hell, the same can be said about Horford, too! Crazy.