There's nothing wrong about women getting on with things, there's nothing wrong with women coping, there's nothing wrong with women finding things easy, there's nothing wrong with brilliant at housekeeping etc. Thats not what the OP is about at all, she's not saying being good or being able to cope is something to be sneered at.
It's when you have a thread where someone is saying for example, they are struggling to get all the housework done during the day as the dc are clingy, so she's doing odd jobs once the dc are settled while her dh gets to relax and watch TV. She thinks it would be nice if he helped a little every now and then so she can relax with him too.
Some responses will say he could lighten the load by pitching in by doing dishes, or playing with dc while she does a, b or c, some will say they were in same situation and offer solutions that worked or didn't work for them. Some will say they manage everything before dh gets home and give tips, some may even point out things the OP can do differently to give herself a bit of free time.
But then you also get some posts that go like
"Why on earth isn't all the housework done during the day?"
"Surely your dc nap, do all the cleaning then"
"I don't understand women who can't manage basic household tasks and looking after dc"
"Of course dh shouldn't be pitching in, you have all day to get this stuff done"
"I was at home with 5 dc and managed housework and a hot meal cooked from scratch on the table for dh everyday, it's not difficult"
"I work full time and get manage to clean and cook everyday, you have it easy"
It's those type of posters the OP is referring to,
It also sometimes looks that when a woman is doing the housework and childcare, it's easy and should be just gotten on with, whereas ask a man to sometimes do a bit of it, it's a big deal as he shouldn't have to come home and do work in house.