Thanks for your interest in the Configuration Settings Spreadsheet for the D7000.
Actually I do use the "Back Button Focus" method myself - however this Spreadsheet is meant as an aid just to layout out the various (and numerous!) settings available for the D7000, and is not a recommendation for any particular set of settings per se - that's up to the user to choose to suit his or her shooting preferences.
When words become unclear, I shall focus with photographs. When images become inadequate, I shall be content with silence. - Ansel Adams