Not okay. Never okay.
It doesn’t matter what your feelings are about Ian Hallard’s tweet or Amanda Abbington’s response or any of the shit going on in the Sherlock fandom.
It doesn’t matter whether you’re hurt or feel betrayed by what they said.
It is never okay to send hateful messages to anyone and it is DEFINITELY NOT OKAY TO WISH SOMEONE DEAD.
Please grow up, or at the very least learn some basics to human interaction.