As this thread has descended into drawing ridiculous conclusions about itself and its participants, it's interesting to consider - as an aside - how many will acknowledge their erroneous position after the Supremes rule.
You keep claiming a ruling of the Supreme justices but there is NO CASE about this is front of the docket (or you have shown us no evidence of such a case). So there will be no ruling anytime soon if ever. If this case ever gets out of lower court, there is no guarantee that the SC justices will pick this up.
And this thread has descended because into a thread full of nonsensical non responses (usually full of incorrect comments) and a position about this case that is based on personal view rather than the law, jurisprudence and reality (and yes I am talking about the baseless positions that FB is bound by the 1st amendment and that what they are doing is illegal).
Where are the police reports about the illegal acts of FB? Where is the evidence that this is a first amendment case at all? Disregarding the fact that FB is not something of the government and has no duty to provide room for people who break FB's rules?
So for all concerned, the first amendment is that the government or it's agents cannot limit freedom of speech. Now if a website is being used by an agent of the government (say the president and twitter) than that state agent may not ban people from his twitter account as he is proclaiming official acts and views on there. But that is not about twitter in itself, it is about it's user and the defendant in such a case would not be twitter but would be the user (in this case the president) who cannot ban people from his account as he is using it for state business. The same with other cases. FB when used by a government representative has to allow responses on it because of the nature of who has the facebook account.
The government has been banned from forbidding dirt bags, sorry, sex offenders from using facebook/twitter/etc. because that would limit their ability to use their freedom of speech (and other rights possibly) but again the defendant in this case was the government, not facebook/twitter.
As long as facebook bans people in accordance to its terms of service (what we sign to uphold and adhere to as FB members) than the first amendment is never going to apply. It has nothing to do with the government who isn't allowed to censor opinions and even that is not absolute. Hate speech, child pornography, defamation/slander, incitement to violence and true threats of violence as not freedom of speech examples that are legal. So even there it is not an absolute freedom of speech. And if the government can ban hate speech/etc. than why cannot FB.
The idea that everybody has a right to FB is ludicrous, in principle everybody may have the right to join, but if you abuse that right, you get banned. That is logical and not a freedom of speech issue.