Lots of factors come into play for toe clearance or overlap. Frame size, fork offset, crank length, head tube angle, and other dimensions all contribute.
I agree that choosing a frame size specifically to avoid toe overlap is kind of silly. Use a good online bike fit calculator or go to a shop that will take measurements and make recommendations for you. Then study general principles of frame geometry and look up the dimensions of the bikes you're interested in. Make an informed decision, and you're much more likely to be happy with your purchase, as opposed to choosing based on one or two isolated factors and some YouTube videos of freestyle stunt riders.