There were five guards in the ACC that averaged 4 assists per game with at least a 2:1 assist/turnover ratio last season.
Reece Beeekman averaged 6.2 with a 3:1 assist/turnover for Virginia.
Teams with these players were Virginia, Georgia Tech, North Carolina, BC and Pittsburgh.
Looking at that list. Having a player that meets those select criteria is of dubious value to winning.
I'm not certain we, as a group, could agree on what exactly we look for in a "true point guard," but I feel like assists and assists/turnovers ratio would be important to the position.