One second she tells her son it doesn't matter what people think. In the same breath she tells him "you know, plenty of guys paint their nails".
In other words she tries to teach her son not to conform, while at the same time trying to normalize behavior based on what other people are doing. Don't get me wrong, the esthetic of the home is dope. But her logic is flawed. She can raise her kids how she wants but since she decide to share this anecdote to the public, i think criticism in the logic is fair game.