Ben Simmons, at 6-foot-10 and 230 pounds with a 7-foot wingspan, is very clearly the largest point guard in the league. He’s obviously the tallest, and no other point guard has more than a 6-foot-10 wingspan or a weight of 210 pounds (via a chart in this article by The Ringer).
His size, along with his incredible passing, are what makes him truly special. As such, it may seem crazy that I would suggest he play more as a center, but you’ll have to hear me out.
To start, I think a player’s position on the court is what they do on defense, not offense.