Don't helicopters have a lower threshold for IMC than we fixed wing folks?

It's a lower VFR ceiling and visibility limit, about half of
what the rest of us are held to. I guess we could call it an IMC
threshold. Helicopters can move forward slowly when the viz is bad, and
thereby avoid the cumulogranite.
But IMC and ice are two different hazards. I have heard of a
helicopter that runs hot bleed air through the rotors to deice them. I
don't know if that also applies to the tail rotor, or if it might be
electrically heated like a prop.

Dan