Nice intentions of the conference, but little can be done (1a right of social media companies). Unless this is a stepping stone for a XO/law down the road.
I don't know what your reference to 1A rights means.
First Amendment only applies to the government. I can keep you from burning a flag as long as I don't assault you, but law enforcement or public school officials can't (as long as there's no fire laws or rules being violated and any required permits are obtained).
First amendment also protects the free press, which at this stage doesn't apply to social media platforms.
The biggest issue is SM corporations are trying to control online content through censorship, which should make them publishers and subject to liable, slander and defamation lawsuits. However they are claiming protection from such civil actions by labeling themselves "platforms" which is analogous to a utility like the phone company. As a platform, they aren't responsible for what people post and share. They get their cake and eat it, too.
The issues are confusing and convoluted. Trump (and other public accounts on Twitter, FB, etc) can't legally ban people. However, the platform CAN ban or mute them. So, is the platform operator then acting as an agent of the gov't account holder by providing the forum apparatus? If so, then they can't ban anyone who follows a gov't account. What of people following emergency notification accounts? What happens when that subscriber is banned and misses a safety alert? Is the platform liable for injuries? Damages? Deaths?
SM is a new frontier. As always, it'll take time for laws, regulations and public/private input to catch up. In the meantime, all the SM giants are actively gearing up to make sure Trump isn't re-elected.
I wonder if that constitutes in-kind contributions to his opponent?