I'm guessing 15 years ago has to do with the old millennials being 36. I graduated my undergrad at 21 and purchased my first place at 22 (with no help from my parents except advice). Buying in then is pretty much the only reason I have a house now (I'm an old millennial).

I have friends who have been waiting for over 10 years to buy because "the market is going to crash" and renting is "the only sensible choice". Our first discussion on this topic was 7 years ago (they were 25) and they could afford the house they wanted in the area they wanted, 5 years ago it was a fixer-upper in the area they wanted. Today, at 32, they can't afford anything unless they get new jobs and move cities (which they won't). 

The comment isn't completely wrong. But the last line minimizing the impact of foreign money on the ridiculous growth in prices is obnoxious.