I somewhat agree with you, but I think there is an underlying cause. We are generally not accepting of individual differences, needs, and commitments outside work. We have improved in some ways (e.g. with regard to making adjustments for disability) but there is a long way go.
> Besides giving them much more lax during that period in life. But on the other hand, if they get same pay, it's quite natural that their colleagues wouldn't be happy about it.
More "lax" working conditions all round.
I think individual specialty and massive group specialty is somewhat different.
For individual specialty (be it skills/abilities or lack of them), people can choose career or life paths accordingly. E.g. I’ve met a dead/mute constructions dude. He specialized in line of work where he works solo. If I accidentally wasn’t home while he was here, I wouldn’t have ever noticed.
On the other hand when you have massive groups with some specialty that match similar pattern… Over time it becomes a „norm“. It's not like some people decided what gender norms we should have a millennia ago and rolled with. It was rather a society trying to accommodate some groups of people with some skills and abilities and gender norms becoming a thing were a side effect.
As for more lax working conditions all round, it would be nice. But I’m not sure how modern economy would handle that in a fair way. And once you start institutionalizing more lax conditions for certain groups… I want to see that shitshow.