Why am I even arguing this?

Because you don't agree with Safire, who stated quite clearly:

   Egyptians, from whose name the word gypsy
   erroneously originated, are usually unaware
   of the etymology and are not offended.
   (Gypsy cab, which uses both syllables,
   stresses the ''wandering'' meaning of gypsy,
   which is descriptive and not derogatory.)

Edit: You seem to be saying

   “When I use a word,’ Humpty Dumpty said in
   rather a scornful tone, ‘it means just what
   I choose it to mean — neither more nor less.’

Never mind the opinions of people who made a living writing about the meaning of words.