Many on the secular right (libertarians - such as I was until a few years ago) believed that the internet (including blogs) and other modern mass communication media would act against the excesses of PC, by preventing the elites from controlling information.
I certainly believed that.
But overall this prediction was quite wrong, and I think that overall the opposite has been the case.
In other words, the modern mass communication media have increased the scope and strength of PC.
This is because the problem of PC was not due to lack of contrary information.
(I should have realized this - after all, PC can be refuted simply by taking personal experience at face value.)
Instead the modern communications media have hugely exacerbated the distractability of the elites, and their tendency mentally to inhabit an abstract realm where ideas are played-with and where morality is chosen on the basis of lifestyle considerations.
Indeed, PC probably depends on the mass media - since it has grown up in parallel with the media; and is not found in societies which lack a large mass media.
The least politically correct groups are those which leads the most detached lives, those with the least frequent interaction with the culture of internet, cellphones and the like.
If/ when the mass media collapse, so will PC.
In a McLuhan-esque fashion, the content of the mass media seems to matter less than the psychological effects of its structure: with the elicited psychological responses of abstraction, distraction, neophilia, unreality, pick-and-mix hedonism, and so on, and so forth....
Anything which reinforces the intellectuals' (natural) tendency to ignore the here and now and objectively constrained, in favour of the remote and potential and subjectively wishful - will overall tend to encourage political correctness.
And it has.
And I realise that this appears to make blogging a self-refuting activity for reactionaries - and this is true, but only overall. This blog may be one of the exceptions