They here refers to the Biden administration, unless you're alleging the Biden administration conspired with a Republican Congress to coerce social networks into silencing posts that Republicans themselves were in favor of

it's laughable on its face that this is a plausible threat, and the fact that Facebook totally ignored the "demands" when it suited them indicates empirically that there was no such implied threat they felt pressured by

indeed, Facebook, with knowledge of US partisanship, and a hand in increasing it, was best suited to dismiss such a bipartisan conspiracy theory aimed at silencing such speech a Republican Congress would never dream of silencing