Nobody wants them "to be the arbiters of what is allowed to be discussed". People want platforms to take responsibility for how they are used to spread misinformation. They want leaders held to the same standards as everyday users.

If pg came onto this site and started trolling people, throwing around insults, and spreading lies, what would it do to this community? And if dang responded by doing nothing?

It's so bizarre to me how common the "pro free speech" argument is on this site of all places. There is valuable and interesting discussion here precisely because it's heavily moderated. Facebook and Twitter are moderated too, the problem is they do it inconsistently. And despite Zuck's commitment to "allowing all voices to be heard", Facebook will remain moderated, or else it will turn into voat or 4chan.