Theory/opinion
Boseman lost for two reasons
The awards season was long as hell this year , so all the momentum towards him winning started to waiver as the season went along.
Ma Rainey was an ok movie if it was a stronger movie both Davis and Boseman would’ve won hands down
Boseman lost because the Academy cannot STAND giving black actors leading Awards.
Only FOUR black men in the HISTORY of the Oscars have won Best Leading Actor. FOUR!