  We show how the one-loop "poor man's scaling" equations for the Kondo model
with arbitrary impurity spin can be obtained within the framework of the
functional renormalization group approach for quantum spin systems recently
developed by Krieg and Kopietz [arXiv:1807.02524]. We argue that our method
supersedes the "poor man's scaling" approach and can also be used to study the
strong coupling regime of the Kondo model.
