根据上下文来，这里的 may 应该是表示推测。段意：

In India and the Middle East, it’s considered very rude to eat with your left hand. People in France expect you to eat with a utensil in each hand. Mexicans consider it inappropriate to eat with utensils, instead preferring to use their hands. In Chile, you may never touch any food with your fingers. People in Thailand generally use their forks only to push food onto their spoons.

在印度和中东，用左手吃饭被认为是非常粗鲁的。在法国，人们希望你每只手都拿着一个餐具吃饭。墨西哥人认为用餐具吃饭是不合适的，他们更喜欢用手。在智利，你可能永远不会用手指碰任何食物。泰国人通常只用叉子把食物推到勺子上。