@Blickers,
It is not a coincidence that this terrifying insistence by spokespersons for Trump and by key GOP figures (Ryan, Pence, etc) that truth and facts are unattainable or unrecognizable are being pushed out into the public sphere right now. What else can these people do given Trump's unprecedented level of blatant lies, spoken or written day after day? They are providing cover and doing so with a level of disregard for the the civic good that I've never seen before. This scares the hell out of me.
Part of the reason they are acting in this manner is because of how the media have recently begun treating Trump's deceits. What can these modern right wing politicos do in the face of avalanches of fact checkers and journalists raising the alarms about Trump? Try to invalidate the media, of course. That's a campaign going back three decades or so. But Trump is something new and this requires a new propaganda thrust - so Ryan says he doesn't know if 3 million fraudulent votes were cast. He's lying through his teeth and twisting any rational meaning of "know".
And because Trump is almost certain to continue fabricating a false reality for his own ends, those who wish to see him remain in power for the present and wish to see various extreme right wing policies put into place, they clearly believe they have to change the way citizens conceive of truth/facts rather than simply that any voices but right wing voices are credible.
There really isn't a precedent for all this. When Obama was about to take office, no media including right wing media set to challenging and derogating him as we see now. Likewise, when Bush was arriving in office, mainstream media did not have negative coverage of him, his statements or his appointments as we see now. This isn't a partisan matter. It is a matter of the abnormality of Trump and of the dangers that this man and his behavior represent to the nation.