There are so many assumptions - first is that both partners are able to WFH, then yes of course, there should be parity with the children.
But most households I know, there is a partner who works shifts, and relies on one partner who is able to WFH, so think some companies are starting to get a bit nervous that this will go on for more than 3 weeks so are trying set some boundaries which clearly aren't going to work, such as withdrawing people working from home or implementing a diary of all work activities.