  In this short note we clarify a number of issues that arise when extending
the analysis of Strong Cosmic Censorship (SCC) to perturbations of highly
charged Reissner-Nordstr\"om de Sitter (RNdS) spacetimes. The linear stability
of the Cauchy horizon can be determined from the spectral gap of quasinormal
modes, thus giving a clear idea of the ranges of parameters that are likely to
lead to SCC violations for infinitesimally small perturbations. However, the
situation becomes much more subtle once nonlinear backreaction is taken into
account. These subtleties have created a considerable amount of confusion in
the literature regarding the conclusions one is able to derive about SCC from
the available numerical simulations. Here we present new numerical results
concerning charged self-gravitating scalar fields in spherical symmetry,
correct some previous claims concerning the neutral case, and argue that the
existing numerical codes are insufficient to draw conclusions about the
potential failure of SCC for near extremal RNdS black hole spacetimes.
