To fully understand the interest in the Toe running shoes we need to consider the claimed pros: the design of the toe shoe gives a freedom to the foot, the foot is not encased in a cushion and other structural techs, this gives more range of motion for toes, feet, and ankles. It is claimed that the shoes will give stimulation for strengthening muscles in both feet and lower leg muscles. The style of the shoe enables the toes and feet to move naturally. By encasing each toe separately, neuron receptors in the feet send more informative information to the brain which results in better agility and balance.
Posture and spine alignment is improved due to eliminating heel lift, this all serves towards enabling your body and feet to work in conjunction naturally. It is worth noting that so far there has not been any in-depth long-term studies on the benefits of toe shoes and the increasing popularity of the shoes appears to be due to runners showing interest.