Are you aware of the irony of complaining about people being hypersensitive while you're overreacting to someone explaining why some people might find a word offensive?
If I open etymological dictionary and find out the word "pineapple" was originally coined to demean my ancestors (a fact I and a majority of people were completely unaware), what should the reaction be? Push everyone to start calling them Ananas comosus in everyday speech instead?
In any case, I made a suggestion. Do with it what you will.