Honestly, I agree with a previous response to your earlier comment that it does seem to only be on MN that it's EVEr equal.
BUT, I will say, that I think things hvae gone downhill on this in the last 30 years ago.
When I was growing up, it was quite "traditional" in that most of my friends had dads with full time "traditional" jobs who earned the bulk of the income. the mums did work but usually part time and also often in lower paid roles. Overall, the women did take on the bulk of a lot of the mental load. BUT, and this is the big BUT, there were some things that were just universally on Dads. Some of this was mental and some physical. eg, in most cases, it was Dads doing all the late night lift clubs. It was Dads doign any and ALL heavy labour - whether that was bins, gardens (wives might do the "fun" planting and hobby bits, but the "hard work" was men), or anything else. A silly example would be weekly shop - sometimes the men did it, but mostly it was the women. BUT, when they got home, the men were the ones hauling it into the kitchen and it was often the men who then put it away (or, of course, us kids). My mother and her friends never painted a wall, did any DIY, moved furniture around etc. And it was all done promptly by the men because frankly, there WAS judgement - if the house was dirty, that was on the woman. If the garden was a mess or the front door was unpainted - that was on the man.
Ditto, the men definitely took on all the mental load for bills, utilities, insurance etc - because they had those "big Important Jobs" and all the money.
Again, ditto, it was Dads who took us to get our first bank accounts (they had to sign as the more "important" parent blah blah), or who were responsible for teaching us to ride our b ikes, swim, go hiking etc.
Whereas today, a LOT of those tasks that I grew up seeing as "men's" tasks are now taken on by the women, who have ALSO taken on more employed work and the financial burden. Without giving up any of the tasks they had before.
I think it's very sad. Those men that brought me and my friends up wanted their daughters to be and do anything. They supported us in going to university and building careers. Because it didn't occur to them that their sons or their daughters' partners wouldn't do, at the very least, the bare minimum they'd done their whole lives.