It's shitty, I know. But the truth is that they can't. I know you might think of it as a left wing talking point, but Parler relied on AWS hosts, which Amazon obviously owns. If, say, an organization was transferring child pornography on a website that was on AWS, then Amazon would (and should) take it down. Likewise, if there was an organization that was transferring messages that call for violence, then Amazon would also take it down. Selling illegal drugs on a website hosted on AWS? Amazon takes it down, etc.
Twitter and Facebook skirt past this because they are protected by section 230 and they host their "platforms" on their own servers.
However, there may be some chance of contacting Twitter and Facebook's domain registrar and telling them that these services also contain death threats and organizations that call for violence. If there is something in their terms of service they might be violating, then there might be grounds for action to be taken on the registrars. And if they don't want to be sued, then they might put pressure on Twitter and Facebook like how Amazon, Google, and Apple did with Parler. But I am no lawyer, just spitballing here.
It's shitty, I know. But the truth is that they can't. I know you might think of it as a left wing talking point, but Parler relied on AWS hosts, which Amazon obviously owns. If, say, an organization was transferring child pornography on a website that was on AWS, then Amazon would (and should) take it down. Likewise, if there was an organization that was transferring messages that call for violence, then Amazon would also take it down. Selling illegal drugs on a website hosted on AWS? Amazon takes it down, etc.
Twitter and Facebook skirt past this because they are protected by section 230 and they host their "platforms" on their own servers.
However, there may be some chance of contacting Twitter and Facebook's domain registrar and telling them that these services also contain death threats and organizations that call for violence. If there is something in their terms of service they might be violating, then there might be grounds for action to be taken on the registrars. And if they don't want to be sued, then they might put pressure on Twitter and Facebook like how Amazon, Google, and Apple did with Parler. But I am no lawyer, just spitballing here.