“millennials coming of age” IMO means that the housing market and the economy in general will stay active as they will be forming households and renting/buying homes (this should keep things going until 2020).
(the housing market like it or not plays a significant roll in the general economy).

IMO TPTB wanted the 2001 and 2008 crashes, but right now they are in a world wide coordinated fight to save the world economy (except bad payers like russia and venezuela) also to save local and fed Gov pensions.