You are the one claiming there was a credible threat, so it's upon you to show it.
Empirically, Facebook's denials when it suited them suggests they did not feel any such threat. The fact that they sometimes agreed is not an affirmative indication of such a threat, as they could have easily done so on the merits of the requests.
The fact that the proposed action would require Biden to collude with the GOP congress to censor speech the GOP congress supports most heavily and would never censor, combined with the knowledge of reality that such collusion would never happen, suggests that the threat could not exist even theoretically.
So, now's your chance to put forward an alternative case for there being a credible threat, rather than just an angry dude impotently swearing at social media with no actual power to repeal section 230 short of said implausible collusion. After all, Biden political appointee or not, he and I have exactly the same power to convince the GOP to censor the speech in question: None. Are my angry requests to Facebook similarly plausibly "threatening"? Obviously not.
Let me restate your position to make sure I have it:
1. Because Facebook didn't comply with every request, they never felt coerced and neither did any other social media company, therefore no social media company was coerced.
2. The Democrats who threatened to repeal or modify 230 and the Republicans who threatened to repeal or modify 230 would never repeal or modify 230 because of party politics, therefore this wasn't a realistic threat and therefore not form of coercion.
your argument was summarized above, and it simply doesn't present a plausible scenario:
the dude swearing at Facebook had no power to repeal section 230, no power to control the GOP Senate into doing so, and no plausible path to convincing the GOP to censor the sort of content in question (content the GOP itself supports, content they oppose censoring)
in short: the "threat" you described isn't realistic or plausible, least of all by Facebook, and a claim of coercion requires that the threat be plausible, not imaginary and contrived
Empirically, Facebook's denials when it suited them suggests they did not feel any such threat. The fact that they sometimes agreed is not an affirmative indication of such a threat, as they could have easily done so on the merits of the requests.
The fact that the proposed action would require Biden to collude with the GOP congress to censor speech the GOP congress supports most heavily and would never censor, combined with the knowledge of reality that such collusion would never happen, suggests that the threat could not exist even theoretically.
So, now's your chance to put forward an alternative case for there being a credible threat, rather than just an angry dude impotently swearing at social media with no actual power to repeal section 230 short of said implausible collusion. After all, Biden political appointee or not, he and I have exactly the same power to convince the GOP to censor the speech in question: None. Are my angry requests to Facebook similarly plausibly "threatening"? Obviously not.