The Tool Access report shows a table and a pie chart representing the percentage of overall views for each tool within a selected timeframe. One of the tools is 'Manage Files'. It is unlikely to be referring to the file management tool which is not accessible to students. (In the image, only the 'Student' role was selected, yet it shows that 'Manage Files' was viewed.
Perhaps 'Manage Files' in the Tool Access report refer to content file views (e.g. a file accessed from Content tool). Also, how is the number of views for the 'Content' tool calculated? Does viewing a file in the Content tool be counted as a view of the Content tool as well?