Like pre-modern art, the game is like a window into another world. Just as brushstrokes and picture frames are considered necessary but distracting elements in a traditional painting, dice, rules, Cheetos are necessary but distracting elements in the game. Whatever can be done to limit their hold of the mind of the player and promote pure immersion is appreciated.
Like modern and postmodern art, the game attempts to be a window into another world but it also unavoidably a window into the people involved. As in any game, the dice and the rules and the Cheetos are palpably there, just like the brushstrokes and the picture frame are palpably there in any painting and it is hopeless to ask the audience to ignore them and doing so only highlights the falseness and irrelevance of what you're doing. So, instead, make these things fun--if it is in the players' consciousness, use it to your advantage. Whatever can be done to seize on an element at the table--a table, a rule, a chart, a miniature, a sound in the room, and make it part of a gesamtkunstwerk (albeit one collaged from disparate elements) is good. If there must be a Cheeto, use the Cheeto.