@gsuberland This prevents you from remapping the switch to control something else instead of / in addition to the hardwired load (like an overhead light and a table lamp).
That lamp has to fail on or off if the electronics go haywire.
@azonenberg oh I have no interest in that kind of stuff, I just want a simple switch
@azonenberg I will happily give up more advanced control features to keep the basics simple and hazard/hassle free