I don't think you quite understand. It's the 1st 4 letters of a word that count; if they're the same as in any completely unrelated, but offensive, word, then the word is forbidden. Besides, "cracker" can actually be, and has been, used to deliberately cause offense.
A better example is that I saw "shitake mushrooms" for sale in Clark's in Dryden yesterday (best meat in the area, BTW). You might consider my pointing this out to be a niggling complaint, but just think of the children!
If you vote for government, you have no right to complain about what government does.