I’m from Estonia. Each parent gets 1 month off immediately after (though can be scheduled up to 1 month before due date too, but then you don’t have the month off afterwards
This is followed by about a year and a half worth of paid days that can be used by either parent and the parent can also work at the same time so they double dip
Sometimes people build things just because they want to. Some people will take a look and say “hey that’s cool” and use it. Some others will take a look and say “this does nothing for me” and both are valid opinions to have. IMO nobody should have to justify an open source project unless asking for funding.