answered:
First off, there is so much wrong with this argument it isn’t even funny. This is like saying I can’t critique a book unless I’ve written one, or a movie unless I’ve made one. Which is the dumbest thing I’ve ever heard.
Second, I really don’t care if I’m not a parent. If you put your kid in danger (ie next to an angry cat that will hurt your child) you’re a bad fucking parent.
You don’t have to be a chef to tell when food tastes like shit. You don’t need to be a programmer to tell a game is bad. You don’t need to have kids to know when someone is doing it wrong.