lxskllr is correct.
the harder steel used for the edge is pulled around so the tip is the same as the edge. if you ever see an actual japanese katana being formed the base form has the tip cut with the shorter end on the spine. when hammer shaping the edge the squished material makes the blade side longer inducing the curvature. the tanto tip ends up pushing the harder steel around so the spine looks like one straight line.
with the double edge blade on this knife he has to remove the softer steel for the edge steel to pull around and join. while esthetics also factors in, most knife makers arent going to make a pretty blade with a garbage hardness tip.