From Cory Doctrow:
In short, the fact that being removed from Twitter and the app stores and Facebook and Amazon is so devastating is best addressed by weakening those companies by spreading out our digital life onto lots of platforms.
Not by strengthening them by giving them formal duties to either carry or remove speech based on its content. These duties will justify all kinds of anticompetitive activity, because only a very profitable company can afford to fulfil them.
We do need to diversify social media. I wonder if a single profile and content that could be exported and imported to different platforms would be a good way to do this. In theory, you'd own your data then and the social media plaftorms would have to actually serve you to convince you that keeping your data there was worth while.