This is a case of eating out a lot, cutting it entirely and the effect doesn't even cover the amount a typical home has appreciated by in the past five years.
For some people, once per week is not a lot.
Financials now for buying real estate became ridiculous for many places globally. It can be counted from ie how many salaries of similar jobs you need to buy a house in same place before and now. Not exact, but this shows how things skyrocketed due to cheap debt and speculation.
I mean, there are regular outrages here over people living frugal - not buying cars, living with parents, generally having less, having massively larger college debt to pay. It is combined with outrage over them not buying this or that subscription someone is pushing. Bycicle transport is cheaper then car and is money saving move for people living at right place too. People watch Netflix rather them going ro movie theater and pay for tickets + popcorn.
They do tons of money saving choices, get blamed for them. And then they get blame for buying anything that did not existed 30 years ago.
There is no epidemic of expensive avocado toasts being bought out in large numbers.
More importantly though, I don't think they were necessarily much happier than us either. "Settling down" essentially meant giving up your life. Nowadays you can go to a geeky renaissance fair and find it packed with all sorts of people with kids of all ages. Same thing with like, anime conventions and whatnot.