I agree and that's partially why I support UBI, however, as seen by employers, motherhood is not employment. Yes, some cutesy blogs tell you to list the skills used in managing a household on your resume, but realistically if you're not using that time to learn new skills or freelancing, then it isn't employment.
Parenting is one of the most important ways that one can contribute to society, but women are penalized for gaps in employment caused by being mothers on many levels. Career advancement, earnings, even retirement savings and social security contributions are impacted. If we look at mothers who don't take gaps, they're still impacted, as the glass ceiling is lower and stronger when looking at mothers in the workforce. It's unfortunate that women are penalized for something so necessary to society.