Twitter took years to deploy notification syncing across clients (if I read a message on mobile, it gets marked as read on desktop). Is it really so hard to bel

Twitter took years to deploy notification syncing across clients (if I read a message on mobile, it gets marked as read on desktop). Is it really so hard to believe that deploying a "spam filter" for hate speech is difficult for them? I agree that the technology exists (and plenty of other solutions mentioned in the article). But saying that because the technology exists and hasn't been deployed therefore there is no abuse problem is a hilariously bad non sequitir.