If you're in a rush you can skip this step. But if not, then it's worth the extra 10 minutes of waiting. Salting the cucumbers not only gives it more flavor but also helps remove excess water/liquid from the cucumbers. If you skip the salting step, you'll end up with a lot of extra liquid at the bottom of the bowl not long after preparing this dish. That'll end up diluting the sauce/dressing so the overall salad will be less flavorful. But still delicious ^_^