Earlier quoted context omitted.
This is a simplistic potshot. If you go to your baby every time it cries that could mean a lot of work, so much it ruins your own rest/health/sanity and makes you a worse parent at the times the baby isn’t crying.
A defenseless child wants nothing more than to sleep next to their parent. Everyone sleeps better.
This is an absolute that is not true. Many people, even you, may - great! Others may not.