Alex, they are not trying to make anything irrelevant and unimportant. They are just trying to make our use of the language so inoffinsively bland as to be a parody of itself.
Either that or they are actually writing a book with all the PC newspeak terms in it and plan to get rich when we all buy it so we'll know how to speak.
Of course, by then they'll have found more words that offend so a new, revised edition ($29.95+ shiping and handling) will be necessary.

troll