Currently, if you want to be part of a social network, your options are to opt-in to Zuckerberg's moderation or Musk's moderation.
It would be great if these were _actually_ opt-in (as in, you can be part of a social network without opting in to their moderation polices) and if you can use anyone's "moderation list."
I think ultimately this would allow for freer expression than exists on current social networks.