In general, editing language describing a POV one does not share is neither ethical nor unethical. The main variants are:
Writing for the opposition (i.e. improving, not detracting) - ethical Writing against the opposition (i.e. detracting) - unethical
I may be wrong, being a 4-month WP newbie, but it seems to me that the former type of edits are much thinner on the ground than the latter.
(Obviously detracting will always be against Wikipedia's spirit and policies. Detracting from language describing one's personal POV is either unethical or stupid.)
Arie [[User:AvB]]