The thing is, we aren't able to be objective about our own situations, while we live them.
The women generations before us didn't know there were going to be amazing devices and technology available in years hence, they just lived the life they knew, and if that meant hand-washing, daily shopping, outdoor toilets and so on, then they accepted it. Of course, there were always people with better lives, more money and so on, just like now.
In retrospect, people's (women's especially) lives seemed very hard but most of the time they worked hard, raised their families, and were most likely not given to much introspection about how hard their lives were.
Those posters saying how we shouldn't complain today - we have other, different challenges, that are legitimate for us. Each generation faces both opportunities and challenges - and with every new advance, a problem will arise. It's life.
My parents gave out to me for reading when I should have been studying! The equivalent of me despairing at my teens on their screens instead of doing their work.
Thinking of labour-saving devices, the one thing my grandmother (born in 1918) yearned for was a dishwasher. She had a tiny kitchen, and eventually, in the 90s when she got a new one installed, she managed to fit a tiny dishwasher. She was living alone by that stage, it would take her days to fill it, even though it was tiny, but she absolutely refused to wash up and delighted in using it. She bought each of her adult children a dishwasher as soon as she could - I remember her trying to do so in the 80s for my mum, who worked full time and had 4 of us, so should have wanted it and didn't, it took my DGM years to convince her!