Aragon had a lot on his plate at that moment in time. It is also possible that it was not Bill Ferny working as a Ruffian, but rather an imposter, or at least a phantom. Because Tolkien did not write about it, no-one can denounce this theory as being ridiculous.
Think about it, Frodo was delusional near the end of his life, any other Hobbit would tell you that. His account of the Scouring of the Shire cannot be considered concrete evidence in the case.
As for use of the phrase
The Shire, I am currently finding it hard to stop laughing.
