This is what leads to the "avocado toast" situation [0].
I'm conflicted on what to think about this. He comes across as arrogant, and made a very poor choice of item to illustrate his point, given how many avocado toasts you'd need to forgo to save a deposit for a house. It's also true that lack of affordable housing is mostly a political failure.
But I look at young people in the UK and kind of see what he means. Home ownership (and any sort of real, sustained wealth) seems like such a distant prospect that people would rather just indulge themselves now.
[0] https://www.theguardian.com/lifeandstyle/2017/may/15/austral...