Yes, but also no.
People were claiming Facebook and the rest of social media had such an absolute, Orwellian grip on free speech, information and human communication that if they censored it, it was in effect erased from existence, like Stalin erasing Trotsky.
And yet the actual effect of that censorship on public debate and discovery, by the platforms people accuse of acting as "Ministries of Truth," turns out to have been practically inconsequential.
If anything, it's proven that much of the fear mongering around social media, deplatforming and cancel culture is overblown.