This is funny in a dark way, maybe, and it's true that most criticisms of PCE seem to consist in making fun of its trendiness or vapidity.
This reviewer's own opinion is that prescriptive PCE is not just silly but ideologically confused and harmful to its own cause.
...
Forget Stalinization or Logic 101-level equivocations, though. There's a grosser irony about Politically Correct English. This is that PCE purports to be the dialect of progressive reform but is in fact---in its Orwellian substitution of the euphemisms of social equality for social equality itself---of vastly more help to conservatives and the US status quo than traditional SNOOT prescriptions ever were.
Were I, for instance,a political conservative who opposed using taxation as a means of redistributing national wealth, I would be delighted to watch PC progressives spend their time and energy arguing over whether a poor person should be described as "low-income" or "economically disadvantaged" or "pre-prosperous" rather than constructing effective public arguments for redistributive legislation or higher marginal tax rates.
(Not to mention that strict codes of egalitarian euphemism serve to burke the sorts of painful,unpretty, and sometimes offensive discourse that in a pluralistic democracy lead to actual political change rather than symbolic political change. In other words, PCE acts as a form of censorship, and censorship always serves the status quo.)
"Authority and American Usage", 1999