> Why does this need a plugin to go this far when if you see it you can just block them yourself.

Under any post with a moderate amount of attention, the blue posts that always seem to get filtered to the top are hypebeasts, hustlebros, cryptobros and blatant sycophants. Pages and pages of them.

The majority of blue posters are probably not a problem, but whatever algorithms twitter has for sorting them are the opposite of what they need to be. So auto blocking, auto-muting or even just auto-hiding the div is kind of a necessity to see any useful responses.