killfiles are bad?

[Brian Adkins]

The documentation seems to suggest that killfiles are bad and scoring
should be used instead. I'm having trouble with what should be a very
simple task in my opinion.

I have the cursor on an article in the summary buffer. I'd like to
instruct Gnus to never show me another post from the author of the
article. I think I've looked through every  menu option and haven't
found a way to do this.

As a user, I don't care whether the method is scoring or a killfile as
long as it's easy and efficient.