thecatfromjapan is so madly on point on this thread, I love what you have articulated here.
I have something to say about this:
"...on the relationship boards where some of the double standards on show are breathtaking."
I don't think they are breathtaking. In my experience, women and men behave completely differently in relationships and in the home, and it is a complete nonsense to compare an isolated incident of one piece of behaviour by a woman, to that of a man.
I don't know of any men who remotely begin to cover the level of actual work AND commitment to completion and the bigger picture AND the emotional labour that women do. We are blind to this on one level, and hotly deny it at times "Oh no my husband isn't one of those....") and yet women are subconsciously aware of it, as a rule, a general pattern. And so this informs how they respond to what they hear about men and women in relationships.
If a woman I know (or barely know) tells me that she left work so ill and tired that when she got home she couldn't do anything except get into the house and go to bed, I would probably feel sympathy for her. I would assume she was physically incapable of bathing the children, making the packed lunches, straightening the house, reading the letters from the school and filling in slips, paying a couple of bills, popping next door for the parcel that Mrs G had taken in earlier and lingering on the doorstep having a bit of a chat as she probably hasn't seen anyone else all day, etc. I would also be pretty confident that she is going to catching up on most things left undone the next day. I would assume that she was probably fast asleep with a fever, or in bed with a bucket next to her.
If a man I don't know tells me he was too tired after work to do anything, I would be much more inclined to assume he maybe had a bit of a sniffle, quite likely went to bed with a tablet and watched shit for a while.
Now of course there will be millions of men and women who can buck both trends. But on a site like this where we don't know anyone, we are of course going to go with the numbers. It'll look like double standards. But it's really assuming the backdrop against which all these behaviours take place.
Now men will say "assuming? You're just admitting the double standards, there is no basis for your assumptions."
but there is. Oh yes. there is.