Yes, it is all about how you want to approach this and also what kind of mindset you had about pregnancy and maternity leave. I have colleagues who value their career path as much hence, even on maternity leave they still continue to do some work at home. Their effort was recognised.

I have also seen some who just want to fully utilise all their benefit and boss have to activate another person to cover their job from pregnancy till come back from maternity leave. In this case, of course, they got the bare minimum.

It is not about sexist, more of one's choice.