I’m finding the discussion interesting, even though the premise is dubious.
So for the record, in childhoods spanning mid-70s to mid-90s we did have central heating (early memory of this being installed), washing machine, vacuum cleaner, one car. Freezer arrived mid-80s and was for storing home-grown and bulk-bought items to save money. Convenience food was tinned food and angel delight. I know Findus crispy pancakes existed but the kind of high quality ready-meals we have now did not. Pizza was a craze, parents made the dough themselves (in every house I visited). At some point in the 1970s bakers went on strike and all the mothers made bread.
We never had a dishwasher, microwave or video player though better-off households with more space did.
Some clothes and all costumes were home-made. Women had grown up with the expectation of sewing so the skills and sewing machines were there. There was a brand called Clothkits that sold ready-marked patterns - you just had to cut out and sew.
An important point is that lifestyles don’t change overnight. People often carry on the habits they were brought up with - rather than switching to those of the ‘new era’. There can be huge differences between mini-generations born five years apart.
School had dress-up days once a year or so but there were also fancy-dress parties and school discos and the effort that went into costumes was huge. You’d always make fancy dress out of old sheets, tissue-paper and foil etc. For adults there were fancy-dress hire shop’s because ready-made costumes were expensive.
We had extra-curricular activities but also space to read, play creatively and be bored. There were playgroups - run by groups of mothers - and baby-sitting circles. There were crèches at some work-places and there were childminders.
Generally, a lot of things cost less because they were reliant on the voluntary efforts i.e. unpaid labour of women. True of adult clubs and social activities too.
Stuff like scrubbing front steps is a class difference as well as a time one - that in particular came from working class terraced housing in tight communities- like the mining communities blown apart by Thatcher in the 80s.
But it is true that prople had high domestic standards and judged women whose houses and children were not clean and tidy - more so than now. The idea of declaring yourself too busy with interesting things for cleaning would have been very avant-garde - the domain of communes and left-over hippies.
So I saw a really substantial second-shift being performed - bigger, more essential for basics of family being clothed and fed than now.
You choose to ferry your dc round multiple activities, some people did that then. Less well-off households don’t do this now.