There is no such thing as a service economy, an economy exists to service manufacturing. You manufacture or you “die”.
An economy has needs and therefore produces jobs. Some jobs are small, but are still needed. There always will be low skilled jobs that don’t pay a lot. It doesn’t make them unnecessary.
Young people are the most spoiled and weak generation America has ever produced. Worse they have been taken advantage of by higher education and Obama. With luck they will learn and become one of America’s strongest generations. But they have to learn that freedom and self-determination is their future. They are not slaves begging for a better way of life to their government, which is what exists in Europe and it’s what Sanders and the Democratic Party are trying to produce.
I never implied the low-skilled jobs were unnecessary.
As for young people, they aren’t even the focus of this legislation. It is designed to accommodate the people who will work low-wage jobs their whole lives (since there will be many more workers than “good” jobs). In my area many low-skilled jobs are worked by middle-aged and older Americans and Hispanics; as my teens look for work they encounter these people in jobs that in my day were held by high school students.