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...
It's unhealthy to just throw every difficult problem at courts; the legal system is clumsy, unresponsive, and often tends to go to unwanted extremes due to a combination of technical ignorance, social frustration, and useless theatrics.