Don't give the President(any president) credit for the collective action of over 300 million people.
The boomers created the strong economy in the nineties, the distorted economy in the 2000's, and they also created the great recession. The millenials are slowly but surely pulling us out of that downturn. When they are in their prime working/consuming years the economy will be booming again. They will go through their mid life crisis, distort the economy, and ultimately cause a crash just like the boomers did.
I never understood these generational arguments. It's not like a bunch of people were born in 1960, then you had a lull until they hit the age of 25, at which point they all had their next generation babies.
It's a continuous process where similar number of people are filtering in and out of society. Changes to social and cultural norms should result in a smooth curve, and not in abrupt bursts as one generation leaves the force and another enters.