I recently submitted an edit for a question asking "Is [medical technique] a hoax?" changing it to "Is [medical technique] efficacious?"
Calling it a hoax suggests that the proponents are deliberately being misleading and fradulent, as opposed to just being wrong.
IANAL, but I fear this may be libellous.
Did I do the right thing, or am I being overly paranoid due to the chilling effect of libel laws?
Do we have a general position on calling people deliberate liars and frauds (as opposed to mistaken)?