What role do modern simulations incorporate magnetic fields for, which was absent in the initial Kant-Laplace formulation?

Answer

Helping the central star shed excess angular momentum

Modern simulations acknowledge the critical role of magnetic fields in allowing the central star to shed the excess angular momentum inherited from the spinning cloud.

What role do modern simulations incorporate magnetic fields for, which was absent in the initial Kant-Laplace formulation?
Originstarplanetsolar systemhypothesis