But I thought guys like this were plumbers
Guys like Jokic?
Jokic was so good in youth ball that he left home to focus on professional basketball at 16, started playing pro at the senior level at 17, and is most arguably the most gifted center in the league. He was playing positionless basketball and acting like a point guard from the beginning, in the Yugoslavian tradition which is the GOAT region for international basketball (73 NBA players in the last 30 years). He's probably the greatest passing big of all time, can handle the ball with an array of moves and is a talented scorer.
Oafs with no skill get called plumbers. Guys like Mark Eaton, who was literally an auto mechanic who didn't even join an organized basketball team until 3 years after he graduated from high school and still ended up an NBA All-Star. And he didn't look out of place in an NBA who had an unskilled stiff or two starting on most teams.
You don't get called a plumber for being big and white, you get called a plumber for having damn near the same skill set as the plumber.