Expat: YES! Someone on the other thread about this topic literally said "Well my parents didn't have iphones and ipads (40-50 years ago), didn't travel and eat out every day and managed to afford to buy their home in their 20s." Unless said posters parents were Dr Who's companions, of course they didn't!
Looneytunes - of course your (and my) parents and grandparents managed without mobiles, cable tv, and internet - they had to because they didn't fucking exist! However neither my parents (who were my age in the 80s/90s) nor my grandparents (in the 60s)did without equivalent "luxuries, like a car or hairdryer, or (for parents) colour tv.
Yes they made some sacrifices - when they married my grandparents lived with my great grandmother for several years, until they could afford to buy the house from her....um, in the same way that young people now make sacrifices by living at home in their twenties/thirties when they would much rather leave!
People talk about "spending £3 per day on costa coffees" - firstly, nobody I know does this. Ever. They might get one if they are out and about occasionally on a weekend but the vast majority of people don't buy coffees every single day. Secondly, yes my grandparents would have thought spending £3 on a coffee absolutely insane, something only a fool would do - but they would happily spend a good percentage of their wages on buying fags - whereas smoking is something very few people in their twenties or thirties do nowadays.
Ultimately, even on a 'good' salary, if you are already spending £800 p/m on rent or utilities, or £200 on essential travel costs, or £400 p/m on childcare, plus £100 p/m paying back a student loan (non-negotiable essentials) then no amount of saving a few £3 lattes, or saving £10 p/m on an older samsung rather than they newest version, or £29 easyjet flights to Europe twice a year, are going to add up to a £30k deposit in anything less than thirty years.