The further we drift from an open and free society to a closed police state, the more the establishment has to employ derogatory labels like "conspiracy theory," and "fake news," and create official looking billionaire funded Corporatocracy controlled official looking "fact check," sites.
I don't even remember such a term, until after so many clandestine false flag operations on the public. . . that they finally HAD to back up their bullshit in the public with "fact checkers," to reinforce the gas-lighting.
The more the establishment trashes the Bill of Rights, the more the billionaires buy and control the government, the more we shall see a proliferation of so-called, "fact checking" sources, as if any of them make any difference to the truth.
The term, "conspiracy theory," means so little now? Most intelligent folks, if you pull it out and try to wield it, will probably perk up, and look into what folks are talking about, knowing that it's probably more corporate and government attempts to hide or spin their typical lies, for money, power or to hide corruption.