But whats the point?
The option is called “remove this follower,” and it does just that.
All it does is stop another Twitter user from seeing your tweets in their timeline.

The idea of a soft block is to distance yourself from an abusive follower without enraging them.
Block Pain
The etiquette of social media is complex.
On Twitter, you have a variety of tools to control what you see, and who sees you.

you might block, mute, unfollow, andnow"remove."
Why so many tools?
For many people, it makes little difference.
If you dont like what somebody is tweeting, you unfollow them.
If you dont like their replies to your own tweets, you’re able to block them.
But blocking can inflame the trolls.
When blocked, that user cannot see your tweets anywhere.
And a certain kind of troll may also cajole their own like-minded Twitter acquaintances to harass you by proxy.
you could then mute them, which means you never have to see their tweets, either.
This will, supposedly, prevent the trigger that drives them mad with tweet-rage.
Twitters soft-block tool will become one of our best weapons to manage our mental health while using social media.
As we said, its complicated.
Which is a good thing.