Re: Re Notas Badoff: Sense of proportion
Easy - they could have deleted the tweet that violated their TOS. But then they'd be responsible for the diarrhea in their toilet content of their site.
As has been demonstrated many times in court, policing content does not make the site responsible for the content they let through.
There have been many lawsuits filed against platforms that use logic along the lines of "you moderate content, therefore you are responsible for that content" that has been routinely rejected by the courts.