It's not only not realistic, it's not good for kids. They need time that's not observed by their parents to grow and develop as autonomous individuals.

Also, I find watching my daughter's dance practice boring, and I feel zero guilt for that. I'd rather read a book while she dances, and focus on her when I can actually play with her.

The author is not a better parent than me, or than the other moms she's criticizing. She can feel smug if she wants, but I'm very confident in that.