Odd however for someone who "left twitter", Looks like Zelda came back
Also, what is considered a 'core user'? Is the point of using Zelda Williams as an example mean she was a core user?
I have seen commentary from 'advocates' for better block tools. It consisted of feeding a program in which you fed precreated blacklist you got from a 3rd party.
If you are going to choose to let others decide who you communicate with on social media, you need to re-evaluate why you are using social media.