Well sure. What can be said about the interior of a black hole is arguably philosophy, not physics. One simple alternative view of black holes is that they have no interior. No currently conceivable experiment can measure anything about the interior. The point is important for anyone wanting to deepen their understanding of things. Special relativity is a subject that extends beyond black holes. But the real problem is that the statement is quite misleading. I don't think it should be provided even casually, as it leads folks to incorrect thinking. For example, it seems to allow a chain of in-falling devices, each with an emitter and a receiver, relaying signals outwards, while removing the incremental red-shift of the prior device.
Thanks!
TomB