The best line I saw (on Twitter) was that people should be offended by “Washington Redskins” because it contains the word “Washington.”
Words are magical things, routinely defying the sort of logic-chopping on display in Costas' tirade. Their euphony can be a siren calling us to dangerous shores. Logophillic pundit William Safire, an unreconstructed paronomasiac, could be so seduced by clever puns, he often crashed whole columns into them. My former boss, William F. Buckley, was often in the dock on charges of aggravated sesquipedalianism, to which he always pleaded nolo contendere, informing the court of public opinion: "I am Lapidary But Not Eristic When I Use Big Words."