Society is sexist though. A great point made months back on a related thread was about traditional "man" jobs and "woman" jobs. Go back to the 1950s set up and the father would do a lot more heavy domestic related work that is now redundant/ considerably easier. Gardening a paved/ gravelled garden, using electric mowers/ hedge trimmers mean that gardening is far, far lower maintence in time spent. A low maintainance garden might only need a couple of afternoons effort per year. You can't tinker with a modern car. DIY tends to be outsourced or easy, pre-assembly kits.
Meanwhile improvements in the "women's" jobs inside the house have a lot less benefit of effort. Consumerism means there is much more to tidy and clean. Washing machines and tumble dryers are probably the best game changer along with modern fabrics reducing ironing... the impact of that has reduced by the increase of volume of clothing in the house. Plus parenting is much more hands on and supervisory placing more strain on mothers.
Following a traditional pattern of chores means men gain a lot more leisure time while women lose it.
DH and I both grew up in breadwinner/ SAHM households. For various reasons, I've ended up as a SAHM after working my DCs young childhood (DS has ASD and finds wrap around care too much beyond a school day)
When I was working, different working-out-of-the-house hours meant that gradually I did pick-up more of the domestic burden such as cooking. Maternity leave and being first home with DCs cemented that. DH isn't a man child and is pretty self-sufficient, plus also has phases of major DIY, so he's not the worst example, but it's harder to see the effects of his tidy-as-he-goes style compared to my cataclysmic mess, then big tidy-up style.
I try to encourage my DCs to do a reasonable share. ASD is a complicator. DS2 is more willing, but DS1 getting stewed over it is not helpful. When they think for themselves, I praise their initiative. It's a slow slog though. Coaching and cajoling them through tidying is more work than doing it yourself,and when life is a rush, it's an easy trap to fall in to.
Some women do martyr themselves. They may simply be too busy to play the long game. Some place too much of their self-worth into the household. Some are blind to out-dated internalised mysogeny. Some play power games of control/ golden child. Some bow to peer pressure.
It's complicated and not a one-size answer, but lifestyles of recent decades have changed far quicker than culture.