That's not my point. People aged 25-30 first enter the housing market. Most of the millennials have been on the market for a while now, but haven't been able to buy because it is unaffordable to them. I know 40yo people that have been looking for a place to buy for years now.
I don't think it makes sense to say someone that can't afford to participate in a market is in the market. They'll enter the market when they can reasonably participate and want to. Age doesn't have anything to do with it.