In the time-honored tradition of investigative journalism, he decided to check it out for himself. He didn’t happen to have a meat stick handy, so he tried an appropriately stylus-shaped cheese stick instead. (For the record, it was “chilly” and string cheese).
Check it out for yourself: it works. (From about 3 min. into the video).
His experiment also answers another important question about using stylus (styli?): they’re always pretty cheezy.