last year Tatum hit shots from 0-3 feet at 73.5%. As a comparison, Brown has never been higher than 70.3% in any season in his career. James Harden, regarded as one of the best scorers and finishers, has hit 70% just once in his career and he was still playing for the Thunder then. Now 73.5% is Lebron's career average, but he didn't higher than than until his 7th year in the league.
There are so many takes like this with Tatum that just aren't borne in reality. Enjoy Tatum, players like him don't come around very often.