Some restaurants have a menu list like a mini dictionary, but if you ever find yourself in a restaurant with a giant menu, it's best to pack up and leave.
If you look at the menus of Michelin-starred, fine-dining restaurants, you'll notice that most are concise and simple, indicating the staff are well-taught in making such meals.
It's worth noting that long menus aren't always bad. Certain places, like dim sum restaurants, have diverse menus due to the sheer variety of dishes they offer.