Sure, people need to use resiliency skills to cope with the stresses of life. Often times, this is an important part of what therapy for depressed people is trying to achieve.
But this isn't to say that there isn't a constellation of causes in recent decades and years that cause the world to be particularly stressful, especially for young people. It also isn't to say that we should dismiss what is occurring in the world today as "the same old stuff" without acknowledging that it may actually have unique properties worth understanding. Off the top of my head: world population is at an all-time high, global warming is becoming increasingly understood, it is increasingly acknowledged that we can no longer simply extract unlimited resources from the earth to solve all problems, the Internet has changed the way the world works that seems to speed everything up: communication, changes within social groups, larger societal shifts, economic change, etc.