It's such a stupid argument on the part of everyone dunking on him.
Bro wasn't speaking to the quality of the nba, which is the best in the world but rather on the accuracy
Of labelling nba champions as world champions, which internationally tournament did nba teams/winners play to earn that title
Argentina are the world champions by winning the most prestigious international title, the world cup.
uefa champions league is the best in the world but their champions don't go around claiming to be world champions
Not unless they win the club world cup ofcourse
Now if he said the USA men's basketball team were not the world champions then it would be a false statement tas they are the current holders of the international basketball tournament, the Olympics. The nba however is a national/domestic league and doesn't compete in international tournaments unlike the USA mens basketball team so he's absolutely correct
This shouldn't even be a controversial statement at all