There's risk in every major life decision, including having kids.

I hope I'm not coming off as anti-children but while parents couldn't have anticipated the pandemic and its impact, they need to react to the circumstances. If their home situation requires it, then they should switch to part-time or even quit temporarily.

I also agree with giving parents "extra slack", though again there are limits. At this rate the pandemic will remain with us for another year. The onus is probably in company leadership to make the necessary changes and not have colleagues start to resent one another.