Thing is... talks like these give a wide body of application developers ammunition to say "smart pointers are slow, we need to use raw pointers!". Which is incredibly damaging. In many real-life situations, the difference literally doesn't matter (one more memory move? pfft... I'd take the whole complicated, exception-safe function body over knowing that in case of an exception I won't have a memory leak)

There are indeed cases where this sort of difference in performance matters; But those are a vanishingly small group of people; and as far as those people are concerned - they typically look at assembly anyway.