== Was once the most offensive term == 
 That line about fuck being once the most offensive term of all that people kept editing in and out is pretty subjective, and not necessary. The intro just needs to give the very essentials of the term in not too many words; the historical section deals with how offensive it's been in different periods, and what changes occurred in that respect, in a much juicier way than a simplistic sentence we could argue over till the end of time.