Power to the people.
As to "many cases where online communities document or facilitate crimes elsewhere", why criminalise the speech if the action is already criminalised?
That leaves only "Campaigns to harass individuals and groups". Why wouldn't moderation tools as powerful as the ones employed by Twitter's own moderators deal with that?
[1] https://mtsu.edu/first-amendment/article/970/incitement-to-i...
These are global platforms with global membership, simply stating that “if it is free speech in America it should be allowed” isn’t a workable concept.
When there are people all over the globe participating in the same discussion, you can’t realistically have an odd patchwork of rules. It’s very common for people on this forum, for example, to be commenting on their experiences in Europe, where free speech is heavily curtailed in comparison to the states. How do you manage such threads?