STIR/SHAKEN probably has helped a bit, but the amount of times my dad has infected his phone with viruses and been "called back" by someone after a robodialer c

STIR/SHAKEN probably has helped a bit, but the amount of times my dad has infected his phone with viruses and been "called back" by someone after a robodialer called them shows that regulating the "good guys" hasn't really stopped the bad guys much, just made their list of targets somewhat smaller.