Maintaining that list is extremely tedious work and pushing that down to the individual user just drives people away. Users don't want to constantly filter and block an ever growing list of spam, bot, and troll accounts. Parlor/Gab/et al essentially tried this "let the users block" method and it failed practically immediately and they've all instituted some sort of content moderation or just disappeared.
The solution to this problem is AdBlock. Everything that AdBlock needs to be the success that it is today is exactly what we need for social platforms as well. Both for moderation(filters), and for the 'algorithm'(sorting).
Want to keep the default list? Good, just do nothing and you will see what Twitter wants you to see. Want to see unfiltered? Just turn the blocking off. Want to add a filter just for yourself? Easy. Upstream that filter such that it eventually becomes the default? Go for it. Have different filters to cater to different cultures? We've got the different lists for you to subscribe to.
They should be made so that you can algorithmically pick whatever subset you want. If you just want Parlor content, go for it. If you want everything except Parlor content, just flip that flag.
Something literally illegal? That gets deleted and removed from everything.
I'm saying let Twitter do the work of blocking those users. Instead of hitting the "ban" button as they do now, they hit the "Nazi" button. Now they're Nazis and everyone who says "I don't want to see Nazis" won't see them. It's not any more work on the user's part.
And I haven't seen a reason that this is any more tedious work on Twitter's part than the work they do blocking it. Maybe one argument is that Nazis are more likely to post illegal stuff, so banning them early preempts the work of looking for reasons to ban them later.
People already abuse flagging systems to try to push people off Twitter and Youtube so Twitter will need something to deal with people false flagging posts or the "no XXXX" filter will be useless.
