  We critically assess a recent assertion (arXiv:1508.01124) concerning using
delta-functions to analyze how higher-codimension branes back-react on their
environment. We also briefly summarize the state of the art: describing how
stress-energy balance dictates the components of off-brane stress energy in
terms brane tension; how this can modify the standard tension/defect-angle
relation for codimension-two sources when dilatons are present; and how it all
relates to extra-dimensional searches for a small cosmological constant.
