[raganwald]

Calling it a death tax does not change any of the underlying mechanics

Yes.

or reasons to support/oppose it.

Obviously, no :-)

That's why you're calling for people to stop using this emotionally loaded and inaccurate phrase. Calling it something it's not absolutely changes the reasons to oppose it, which is why we also have phrases like "Death Panels" and "Baby Killers" to describe Canada's (obviously horrific) health care system.