I wonder if adding a fraction of a second delay to posting a tweet for every follower you have would help?

You could put up a little message, with an AI crafted hint text:

You're about to accuse someone of something terrible to X million people, we've given you X minutes to confirm that you have done the slightest bit of research to confirm your facts and check you want to continue.

You have deleted X tweets in the last year, and been sued for Y of them, would you like to pre-delete this one?