It's unnecessary noise and what would be far more useful is how many files and folders that folder actually contained.
To be honest I don't really see the point of putting the comments next to the file name either.
Also, I wish for the love of god that they put the file size there.
Then again my primary use case of github is reading code to learn and having a nosey at how good a coder someone is, so I'm generally looking for the bulk of a program, hence the usefulness of file size and the uselessness of commit comments.