  Several arguments given in arXiv:1912.12316 suggest that braneworld effective
models with fields strictly localized on $\delta$-like branes cannot be
UV-completed by a fundamental theory including gravity, i.e. they belong to the
Swampland. It is concluded that one should instead only consider models with
quasilocalized zero-modes of higher-dimensional fields. In this comment, the
arguments are critically reviewed, and various loopholes are proposed. Beyond
that, the main point that is discussed is the notion of effective brane form
factors, which are required when the singular behavior of the branes is
softened in the UV-completion.
