Some of us skimped on $15 lattes, very fancy apartments in San Francisco, and food delivery to save the money to do it. Don't generalize. Not every home owner is a spoiled brat.
Perpetuating myths about lattes, (or avocado toast[1]) does nobody any good; they are not the reason homes are unaffordable. Homes are unaffordable due to insane zoning policy and Prop 13.
[1]: https://money.cnn.com/2017/05/15/news/millennials-home-buyin...
I had no trust fund or parental help and bought a house in the bay area just fine by being frugal the decade before said purchase